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  1. Trailer Brake Controller
  2. CURT
  3. Electric
  4. Electric over Hydraulic
  5. Proportional Controller
  6. Up to 4 Axles
Curt Echo Under-Dash Bluetooth Brake Controller w/ Custom Harness - 1 to 4 Axles - Proportional
CURT

Curt Echo Under-Dash Bluetooth Brake Controller w/ Custom Harness - 1 to 4 Axles - Proportional

Part Number: C74SV
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$264.95
Trailer Brake Controller
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Towing? There's an app for that. This brake controller connects to your phone with Bluetooth so all your settings are right in your hand. The plug-and-play unit mounts under your dashboard, out of sight and out of your way. Great Prices for the best trailer brake controller from CURT. Curt Echo Under-Dash Bluetooth Brake Controller w/ Custom Harness - 1 to 4 Axles - Proportional part number C74SV can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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CURT Trailer Brake Controller - C74SV

  • Electric
  • Electric over Hydraulic
  • Proportional Controller
  • Up to 4 Axles
  • CURT
  • Hidden
  • Under-Dash Box
  • Smartphone Display

Towing? There's an app for that. This brake controller connects to your phone with Bluetooth so all your settings are right in your hand. The plug-and-play unit mounts under your dashboard, out of sight and out of your way.


Features:

  • Activate your trailer brakes in proportion to your vehicle's braking
    • Automatically adjusts trailer's braking based on deceleration of tow vehicle
  • Control and monitor your towing from your smartphone with the OneControl app
    • Adjust sensitivity and max power output
    • Press the manual override button in the app to control sway or stop in an emergency
    • Save multiple trailer profiles and driver settings - great for a fleet
  • Troubleshoot with the diagnostic LED lights on the main unit
  • Install main unit out of sight behind the dash in any position or angle
    • No more banging your knee on a bulky controller
    • No need to drill into the dash or ruin your vehicle's interior
    • No complicated wiring - custom-fit harness lets you plug in and go
  • Keep your electronics safe with built-in reverse polarity and short circuit protection
  • Install main unit with plug-in harness, mounting adhesive, zip ties, instructions, and quick reference guide
    • Bluetooth PIN for initial pairing to your smart device located in quick reference guide
  • Pair with other OneControl systems for convenient control of your trailer in one app
    • True Course (C94VV - sold separately) prevents sway
    • Tire Linc (C54VV - sold separately) monitors your tire pressure and temperature


Specs:

  • Application: trailers with up to 4 axles (8 brake assemblies)
    • Compatible with electric or electric-over-hydraulic trailer brakes
  • Main unit dimensions: 3-3/8" long x 3" wide x 7/8" thick
  • Smart device OS requirements:
    • Apple: 5.0 and newer
    • Android: 4.3 and newer
  • Warranty:
    • Limited lifetime on brake controller
    • Limited 1-year on wiring harness


Note: If Bluetooth connection is lost, the brake controller will continue to function safely, using the most recently programmed settings. This brake controller is not compatible, but will not interfere, with Apple CarPlay or Android Auto.


The Curt Echo under-dash is all about convenience. With the main unit mounted out of sight beneath the dash, all you need is your smartphone to control the settings on the brake controller. You won't have to worry about banging your knee on a bulky controller, cluttering up your dash, or ruining the sleek look of your interior.


Towing with Your Smartphone and an App

The Echo is unique for giving you control of your towing through your smartphone. You can set the maximum braking output, adjust the braking sensitivity, apply the manual override - all from the OneControl app.


The Echo connects to the app via Bluetooth. You can save multiple trailer profiles in the app, a big plus if you have a fleet and want to be able to just select a pre-set configuration and get towing. And don't worry: after you've downloaded the app, you don't need to have data on to use the app with the brake controller. You'll be able to receive calls and texts and access your other apps.


OneControl App

Simple, intuitive, and user-friendly, the OneControl App makes it wicked easy to manage your settings and control your trailer.


how does the One Control app work

1. Manual Override

This big orange button in the middle of the app is your manual override. Press and hold the button, and the brake controller will smoothly apply the trailer brakes without applying your vehicle's brakes. This is perfect for stopping sway or controlling your trailer's momentum in an emergency.


Curt Echo Under-Dash App Manual Override Button

Quick tip: Put manual override right at your fingertips by adding this button (C83HR - sold separately) to your dash. The app must be running for the button to work, but it can be in the background while you use other apps on your phone. The button has an adhesive back and runs on a replaceable battery.


2. Brake Output Indicator

The outer ring gives you a visual indicator of how much power is being applied to the trailer brakes. This is determined by your max output setting.


3. Max Output

Braking output is the maximum amount of power that will be applied to your trailer's brakes. How much braking output you need is determined by the weight of your trailer; a heavier trailer will need more power to bring it to a stop.


To set your maximum braking output, tap this button and increase or decrease using the + and - buttons. You want to set the braking output as high as you can without locking up the brakes.


4. Sensitivity Level

This controls the aggressiveness of your trailer's braking, meaning how quickly the brakes reach the max output level. This is a great adjustment to make when you're towing a heavy load and the trailer will need more umph to bring it to a stop so it doesn't push your vehicle forward.


Just like max output, if you need to change your sensitivity level, use the + and - buttons. If your vehicle takes too long to come to a stop, increase the setting. If it stops too abruptly, lower the setting. You may also need to adjust the sensitivity based on your own preferences, or when the trailer load or road conditions change.


5. Vehicle Hazard Lights

If you turn on your vehicle's hazard lights, there's a chance the trailer brakes will pulse on and off as the lights flash. Turn this setting on any time you activate your hazard lights to prevent this problem.


Save Multiple Trailer Profiles

Curt Echo App saves multiple trailer profiles

Get on the road faster by saving your settings. With the app, you can add and store multiple profiles for both trailers and vehicles so that your preferred settings will be ready to go as soon as you hook up. This is perfect if you own a fleet and don't want to have to reset the controller every time you swap out trailers. You'll have the ideal settings saved and waiting for you. To switch between profiles, just swipe left or right.


OneControl: One-Stop App for Towing

If you like the idea of monitoring your trailer from your phone, the other OneControl systems could be a great fit for you.


The Curt True Course (C94VV - sold separately) is an advanced Bluetooth sway control system that automatically triggers the trailer brakes (independent of the vehicle's brakes and the brake controller) when it detects dangerous trailer movement. The Curt Tire Linc (C54VV - sold separately) Bluetooth TPMS monitors the temperature and pressure of your trailer tires. All of these systems use the OneControl app so you can manage all of them in the same place on your phone.


Plug-and-Play Installation

You won't be banging your knee on a bulky brake controller or interfering with your vehicle's lower airbags because the main unit mounts out of sight under your dash. This product comes with an adhesive pad and 4 zip ties to make it easy to mount anywhere. (Just don't zip-tie the box to wiring or cables that can shift as you drive!) Thanks to the 3-axis accelerometer, the main unit can be positioned at any angle. No matter how you install it, the unit will sense the direction of travel and deliver smooth, even braking.


Curt Echo Under-Dash Main Unit Module

The included custom-fit adapter plugs into the port that is built into the electric junction box beneath your vehicle's dash. The black box is located to the left of the steering column, just above the carpet. To plug in the adapter, first remove the cover on the box. The adapter plugs into the second slot from the left, on the top row. Once you're plugged into your factory port, just plug the other end of the adapter into the Echo. No hardwiring needed!


Once that's done, download the OneControl app on your Apple or Android smartphone and wirelessly pair the unit to your phone via Bluetooth, following the in-app instructions. It should take about 5 seconds for them to pair. Once paired, the LED light on the unit will turn a solid blue. Plug in your trailer's 7-way and let the whole system calibrate for another 5 seconds. When the LED turns green, configure your desired trailer brake settings and save it as a profile. Then you're ready to tow!


Curt Echo Under-Dash LED Troubleshoot Cheat Sheet

Note: If you don't already have a 7-way plug at the back of your vehicle, take a look at our exclusive 7- and 4-way brake controller installation kit (ETBC7 - sold separately).


What is Proportional Braking?

What is proportional Braking

Proportional braking means that your trailer brakes mimic your tow vehicle's brakes. If you slam on the brakes in your vehicle, your trailer brakes hard; if you brake lightly, your trailer brakes lightly too. The trailer's braking is in proportion to your vehicle's braking. This saves wear and tear on the tires and the brakes on both your vehicle and trailer.


The Echo under-dash uses an internal 3-axis accelerometer to sense how your vehicle is braking so it can send the right amount of braking power to your trailer. It measures the inertia of your tow vehicle and activates the trailer's brakes to ensure that your trailer slows at the same rate. The result is uniform braking across your towing setup. No push-pull action - just smooth, proportional braking every time.



51190 Curt Echo Wireless Trailer Brake Controller - Under Dash - Smart Phone Bluetooth Connection - One Control App for Brake Controller - 1 to 4 Axles - Proportional

51352 Curt Quick Plug Brake Control Adaptor Harness

Installation Details C74SV Installation instructionsAlternate Instructions C74SV Installation instructions



Video of Curt Echo Under-Dash Bluetooth Brake Controller w/ Custom Harness - 1 to 4 Axles - Proportional

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Curt Echo Under-Dash Trailer Brake Controller Installation - 2018 Chevrolet Silverado 1500

Hey everybody, how's it going Today, we're gonna be going over the Curt Echo Under-Dash Trailer Brake Controller here on our 2018 Chevrolet Silverado 1500. So the Curt Echo Under-Dash Trailer Brake Controller is one of my favorite options on the market. And the reason for this is simple. With most traditional brake controllers, you have to drill into the bottom of your dash and then you have this bulky controller that you're gonna hit your knees on getting in and out of your truck here. With the Echo Under-Dash, everything is gonna be installed behind the dash there. There's no drilling into the dash whatsoever and you're not gonna be sacrificing your leg room.

Everything is gonna be conveniently out of the way there. And it's actually gonna be controlled from a mobile device. Therefore we're using something that we're already comfortable with. So in regards to our mobile device, we can either have a tablet or a mobile phone, and it can use either the Android or the iPhone operating system. It really doesn't matter.

I will say that you do need an active data connection in order to download the app. But once you have that data connection to download the app you don't have to worry about losing signal when you're out in the middle of nowhere, the app will still work as promised. If you're familiar with towing a trailer with electric brakes, there's really two main types of brake controllers. We have portion proportional. We have time delay.

Now proportional is a little bit better design if you ask me, they do run a little bit more than the time delay, but basically they're more fine tuned. They're gonna allow for much smoother braking because it's basically gonna be applying the brakes in our trailer in a force proportional to that in our tow vehicle. So you really don't have to worry about one dragging the other there for there being some sort of delay between the brakes on the vehicle and the trailer. Everything is gonna be nice and seamless and just really sum this up. What it does is basically if we're out in the highway, we really slam on our brakes 'cause someone cuts in front of us and we need to come with our trailer and our vehicle down to a fast stop.

It's gonna apply a lot of force to the trailer brakes so we can get that done. Now on the contrary, if we're just driving around town coming to a slow stop at a stoplight, we obviously don't wanna lock up the brakes on our trailer by sending a ton of force. So the proportional design is gonna sense the momentum of the vehicle there coming to a slow stop. So we're just gonna apply a small amount of force to the brakes on the trailer. The Echo Under-Dash is compatible with trailers up to four axles. Not that I think we're gonna have that many with our Silverado here. And it's also compatible with electric over hydraulic actuators. So pretty much, no matter what you have on your trailer, this controller is gonna be compatible. Most of you guys, aren't gonna have an EOH actuator or four axles, but the option is there if we need it. So in regards to installation this one is gonna be very simple. 100% plug and play. No drilling or splicing required whatsoever. We do however, need an adapter harness which is sold separately. And this is just simply something that plugs into the truck and the back of our brake controller. So you will need that, but it is pretty cost effective. And again, it makes for a completely splice free install. So to start our installation here, we need to locate the factory brake control report. So for this particular vehicle here, if we look underneath the dash here to the left of our brake pedal, you should see a pretty large black box here. So what we're gonna do is we're actually just gonna be removing the cover to the black box. Now they're kind of hard to see, but on the sides, we just have some clips that we release and pull out. So you're gonna have to fuel for them, 'cause again they're kind of hard to see but you should be able to feel pretty easily and then we can just release it just like so. So these are the two tabs there. You're just gonna pull out like that. Pretty simple. There's one on the other side here but that one actually just came out once we got these two out. So once we got that cover off here, we're gonna notice we have two large rectangular connectors here. So with these blue handles and we're also gonna notice another one at the top here. So our brake controller plug is actually located to the left of these and then directly down from this one here. So it's this location here. So we're gonna take our vehicle specific adapter harness here. Keep in mind this doesn't come with a brake controller. So you will need to purchase this separately. This one is made for Curt is specifically designed for the Chevy it's designed to plug into the Curt Brake controller but we're gonna take this in here with this white connector. We're just gonna simply plug it into that port there. It should only go in one way and you should hear it click when it's locked into place. And there we go. I heard it click, it's perfect. So now we're ready to take our other end of the brake controller adapter harness and plug it into our brake controller. Now it's only gonna go in one way and again we should hear it click when it's locked into place just like that. Perfect and now we're ready to actually mount the Echo here. Now there's a couple different options for that. We'll get in into that in a second, but I do wanna point out some dip switches here on this side of the Echo. So these two little white switches in there, those are actually some settings that we can further adjust to sort of control how our brake controller functions. Now for most of you guys here, you're probably just gonna leave these with the factory settings here. You're not gonna have to worry about messing with any of those, but if you'd like to know more about them, the first switch there that's gonna be for the brake lights. So how this is set up now is in this with the switch in the current position whenever we hit our manual override, it's gonna light up to brake lights on our vehicle and our trailer. Now, if we wanted to turn that off for one reason or another we would just simply flip that switch. You can use a small Phillips head screwdriver or Flathead screwdriver whatever you have to reach in there just to flip it. They're pretty easy. And then the second switch there those are for the break output. Now normally our manual override or I should say how it's sat from the factory is our manual override is gonna apply a force that we can adjust. So if we turn that switch off, it's gonna basically apply the full a hundred percent to the manual override no matter what our brake controller setting is at. So I recommend just leaving these at the factory settings. You really shouldn't have to mess with them too much but there are some certain cases where you would wanna adjust those settings. So you do have the option to do that. But again, I recommend just keeping with the factory settings. So now we're ready to secure our actual brake controller here. Now I would like to point out that you should see some sort of flashing blue light once you have the two ends plugged in that lets us know it has power. So don't be alarmed there. But in regards to securing the converter, it doesn't really matter which direction or orientation that we have. A couple things though, this is a troubleshooting screen here. So this is actually an LED face. So you may or may not wanna have access to this just to be able to look at it. I'm not really too concerned with that but it is something you want to keep in mind when you're mounting this. And then the other thing is you need to make sure that the service that we're mounting to this is solid. I probably wouldn't zip tie this to some wires that are kind of loose because this sort of system works on inertia. So this needs to be pretty stable. So in regards to the mounting you have a couple different options. We have some double-sided adhesive tape that comes in your kit, as well as some zip ties. If you can use them both I'm gonna use this double-sided adhesive here and there's actually gonna be a metal bracket sort of directly above the emergency brake pedal. There's a nice flat surface up in there. I think it's gonna be a good place to mount this. So I'm gonna go ahead and reach up there and try to get that stuck on there. It is kind of hard to see on camera. So just bear with us here. We'll try to give you a little bit closer view of that once we get it on We just have it tucked back up there as far as I could. And there's that nice metal bracket there. It's nice and flat which is pretty much what we're looking for. I think I'm gonna try to sneak a couple zip ties on there. We may or may not be able to get them on there but it's just extra security 'cause sometimes the adhesive can let go and you certainly don't want your brake controller dangling around like that. That would affect its performance. So definitely try to get a couple zip ties on there. It may be a little bit difficult but the more secure we can make this thing, the better we are in the long run. So we've got everything connected, everything mounted. What we're gonna do now though is we're gonna secure this loose wiring here because we have our emergency brake pedal here. We don't want this to get caught up in there and we do still need to reinstall our cover there. So there's actually a hole here on the bracket that holds our emergency brake cable. I think that would be a good place to sort of sneak in a zip tie. That way I can secure that extra wire. But aside from that, we're pretty much gonna be taking this wire here using some zip ties and just securing it as best we can to get it up and out of the way. Last thing we take our cover here and reinstall that now you will have to sort of move the wiring harness. So it comes out at the top because the top of this box is open. So that's how the rest of the wires poke out. So you may need to maneuver this a little bit But there we go. So now that we have our controller installed, all that's left to do now is hook up our trailer and download the app. So all I did was went to the marketplace and I searched Curt Echo and it should be the first one to pop up there. So we'll go ahead and download that. So once it finished downloading, we can go ahead and just open it up here. So this is gonna be the first screen. We're gonna allow it to access to our Bluetooth, tap to accept. Make sure you read the warning messages Should have a few more of these. Let's go ahead and cycle through those. Again, allow. Now we're ready to get started. So go ahead and hit that button there. Again, we have one more terms of service, we have to accept and now it's gonna prompt us to plug everything in. So we've already gotta plug in, go ahead and hit continue. Scan for devices. And there we go, found it. So we'll go ahead and click that there. Then we're gonna hit okay to pair. So now we're ready to enter our code here. This can be found on the quick reference guide here that comes in your kit or the underside lid of the trailer connector or the brake controller router. We'll just simply enter that same code that appears in one of these two locations. Now keep in mind your code isn't gonna be the same. It is gonna be specific to that one. Go ahead and hit connect Pairing successful. Now we can continue. So once our brake controller is paired successfully, our first green here is gonna be our controller profiles. Now our controller profiles is gonna be more geared towards those people who have multiple trailers 'cause we can actually save the settings that we later setup for one of five different profiles. You can actually rename those profiles to say you have a horse trailer, you have a travel trailer, utility trailer. That way you don't have to go through the settings for each of those trailers whenever you switch. But for the sake of the demonstration, we're just gonna be using profile one. So this is gonna be our main screen here. This is where we're gonna control everything. First and foremost, we have our manual override button. So if you're familiar with some of the more traditional brake controllers, this is gonna be the manual override lever. It's the same thing. We just simply press this and this is going to apply the brakes. Now, if you don't like to have your phone on the dash and open the whole time you don't have to do that with this brake controller here. It'll still work. Even though if the app isn't open running there's actually a button you can stick on your dash for the manual override if you don't want the phone out. We'll move on to the max output settings or the gain or output, whatever you wanna call it. And that's gonna be in the lower left hand corner of the app, we have a plus and minus sign. So it can easily go between increments of five to adjust the breaking force of our trailer here. So for those heavy trailers, we'd wanna turn it up a little bit, but for those lighter ones, we'd wanna turn it down. We do want enough force to stop the trailer but we obviously don't wanna be locking our brakes up. So the best way to find the correct settings is just really go out on the road there, drive with your trailer a little bit. That way you can fine tune it since it's very easy to adjust on the fly. The next to that, we have our sensitivity adjustment and that's an increments of one, from one to nine. And this is basically gonna just determine how fast our brakes start applying. So you can sort of control how fast they do start to kick on. And then the bottom right here, we have our hazard vehicle lights so we can turn that off or on. So chances are you're not really gonna have to worry about this. You're not gonna be using this as much. In very rare instances where you need to tow with your hazard lights on. Now, normally just most brake controllers are gonna pull the brakes, but for this particular app here, we can actually apply the setting. And this is gonna stop the brakes from pulsing while we're towing with our hazards on. But again, most of you guys there won't be utilizing that feature because it's not very common to tow with your hazards on. So that's pretty much it for the main display. And as we, if you want some people like to just have their phone mounted in the dash there where they're using it for GPS, the app will still work in the background. So you don't actually have to have this screen up and running in order for the trailer brakes to work. Everything will work and you can see our phone here. My battery is getting kind of low. Even if my phone we're to die when we we're towing, the brake controller would still work using the last save setting. So you don't have to worry about being without your brakes. So that's a lot of people there have a misconception of the Echo that they don't wanna have their phone out the whole time or they're worried that their phone dies that they're not gonna be able to brake their trailer. And that's just simply not the case. Everything will still work as normal using the last saved settings. But in the upper left hand corner here, we sort of have our menu options. This is where we can change between our profiles if we need to sync another controller. We can also access the owner's manual from here. So just some extra information there for you. But again, this is gonna be the main screen and the one you're gonna be using most often. It's very easy. Everything is laid out very clearly and we can make adjustments on the fly. And that's gonna do it today for our looking installation of the Curt Echo Under-Dash Trailer Brake Controller here on our 2018 Chevrolet Silverado 1500..


by:

Do not buy either the Curt Under-Dash or plug-in Wireless brake controllers until Lippert fixes the phone app. I’ve used both happily with the old ECHO Smart Control app. I could use the remote manual button with the phone app not even running. As one would reasonably expect the button talked to the controller directly via Bluetooth. The new OneControl Auto app must be running and in the foreground to use the manual remote! And the most recent version of ECHO Smart Control is non-functional, it just tells you to install OneControl Auto.



by:

This is my first proportional brake controller. Stopping is much smoother without sacrificing safety. Communication by bluetooth makes for a clean installation.



by:

The Curt Echo is now on my Nissan Armada and works perfectly. It was an easy hookup with the supplied harness and does its job.



by:

This was relatively easy to install under the dash of our 2021 Jeep Grand Cherokee, especially since ours has the factory Trailer Tow Package and therefore an existing pigtail connector ready to connect to the brake controller. The Curt wiring adapter made it super easy to connect the Brake Controller to the vehicle's wiring harness. The controller was easy to calibrate and worked seamlessly while we're towing a rented trailer. We used a dedicated (older) cell phone to operate it while we're towing to avoid any potential interference from other apps rather than using our regular phone on which we receive phone calls texts, etc. This was our first time towing a trailer and this easy-to-use Brake Controller helped make us feel safe and comfortable. Highly recommended.



by:

The break controller worked seamlessly. Profiles are easy to set up and it has very reliable Bluetooth connectivity with my phone. Installation was really easy on my Honda Pilot!



by:

Needed a brake controller I could rely on because I was pulling my camper to a site at the top of a 25% grade within a few days. Unit plugged right into the harness for the factory brake controller (with the adapter cable) on my 2014 Ford F-150,and worked perfectly. Bluetooth connectivity works through the app (rather than through the phone's "settings" icon),and connects instantly. I'm very pleased with this product.



by:

Very easy to install. Less than 15 minutes. On a 2023 GMC sierra 1500



by:

Worked great. Helped me to trace down a wiring issue with my wiring on the truck and then worked perfectly and controlled some of the heavier loads and was easy to use.



by:

Outstanding service and a quality produ ct!



by:

This unit has a constant draw on the battery and will kill the battery flat in about three days if the vehicle sits. Numerous other users had the same issue. Don’t buy. I will be contacting Curt about this issue.



by:

sOnly have used it once so far and everything worked good



by:

Easiest install ever !
Plug and play.
App is easy understand and use.
My favorite is with the app and on selected active profile you can see the amount of brake amount is being applied to the trailer when the vehicle brakes are applied. I also install the manual override button. FYI: you don’t need the app on your phone open for the controller or the manual override button to work. Also another nice feature of the manual override button is the size about the size of a quarter, uses a CR2032 battery and the battery level is displayed in the app.



by:

Worked perfect for my 2021 Hyundai Pali sade



by:

Plug and play, no drama.



by:

I was looking for a trailer brake controller that did not require a permanent mounting to the dash or center console of my 2020 Jeep Grand Cherokee Trailhawk. I initially considered the wireless bluetooth controller from Curt Echo that plugs directly into the 7-pin outlet next to the tow hitch. However, reviews from individuals that tow RV trailers identified that particular option prevents the 12v battery on the trailer from charging off of the TV while connected. This would limit the RV utilization during long trips involving boondocking.
The Curt Echo under-dash controller seems to solve that problem and uses the same user interface as the Curt Echo.
Easy to install and operate; problem solved!



by:

I really wanted a trailer brake controller that I didn’t have to stick an ugly knob/box hanging off my dash. This was my solution and it works perfectly. Plugged right into my Honda Ridgeline existing plug, and easily connected to the app on my phone. Nice setup.



by:

As first time truck and pop-up trailer users, we initially purchased a cheaper brake controller that required drilling the dash. This is a new truck, so we decided to switch and spend more for the Bluetooth. etrailer was easy to work with for a return, and the Bluetooth brake controller is fantastic - so easy to use with our new trailer!



by:

This brake controller has to be unplugged when not in use or it drains the battery in a few days. I had to have a electrical test done in my vehicle ($XXX). The etrailer tech said the test was done incorrectly. The Chevy dealer claims it was accurate. I’m left with a problem.



by:

The Curt electric brake controller was the easiest installation I have ever had. I ordered the custom wiring adapter along with the brake controller; it all came with easy to follow instructions and it only took about 30 minutes to install the entire unit. I had done some checking around to get estimates from various companies which do the installations and their costs were around $300.00. The Curt unit including the adapter wiring was $**.00 and a very easy install. I used the brake controller during a recent camping trip on which I was pulling a 24 foot camp trailer. The controller worked great and I could easily control the trailer in some extreme mountainous terrains in Wyoming.



by:

This is the old obsolete model of Curt Echo which has to be installed under the dashboard. The newer version, which attaches to the electrical system in the rear of the vehicle, is superior and now preferred by most trailer owners. The above version should be taken off the catalog.



by:

First, let me say that I have never been disappointed with any of my transactions with etrailer. This holds true with my latest purchase of a Curtis brake controller and pigtail. This is my second because the first was fried when the trailer wiring shorted out. I received the controller in 3 days, which included a partial weekend. The pigtail make installation so simple. I literally had the old controller out and the new one in within 5 minutes. I will look at etrailer first for any of my trailering needs.



by:

The adapter is as advertised, although I have an older brake controller that I had to do a small amount of wire splicing.



by:

Was not aware this device draws on the battery constantly. I don't daily drive my truck and have had to replace the battery twice in one month due to being drained below the point where they could be recharged. $[XX] later and this controller removed, I've not had any problems with the battery



by:

This controller took me literally 15 minutes to install with the required pigtail and my Rubicon with factory towing package installed. When I initially downloaded the app and connected, it actuated and locked the brakes. I simple deleted the app and reinstalled and everything worked normal.



by:

Easiest install I’ve ever had !!
Still
don’t have enough experience to say for sure how it works. But, so far no problems. Sometimes seamless use is the best !!!


25
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    It sounds like you might be interested in a trailer brake controller for your 2023 Honda Ridgeline and if that's the case we have some great options. I recommend the Curt Echo Under-Dash Wireless Brake Controller part # C27JR since it just simply plugs in under the dash so there is no drilling into the dash or knocking your knees each time you get into the truck. It would make for a plug-in-play installation when using the Curt Custom Wiring Adapter for Trailer Brake Controllers part #...
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  • Recommended Parts to Add Brake Controller to 2017 BMW X5 with Aftermarket 4-Way Connector
    The Tekonsha Plug-In Wiring Adapter # TK29FR is what you'd use if your 2017 BMW X5 has the factory 7-Way connector at the back. Since you're using the Vehicle Wiring Harness # 119250KIT that tees in behind the tail lights on your vehicle you need to use the Universal Wiring Kit # ETBC7 instead. This kit comes with all of the wiring and connections you need for a fully-functioning 7-way as well as what you need to get a brake controller up and running. Please note that it might be difficult...
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  • Wiring Diagram for Curt Echo Under-Dash Trailer Brake Controller
    See the wiring diagram below from the Curt Echo # C27JR installation manual. The blue wire is the brake output, the black wire is the 12V power, the red wire is the stoplight switch, and the white wire is the ground. Depending on the vehicle there may be a custom wiring harness available for a plug and play installation. If not, you can either cut the existing plug off to hard wire the brake controller or use the # C51515. I have attached the written instructions along with an installation...
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  • How To Install The Curt Echo Bluetooth Module On A 2018 Toyota Highlander
    I took a look at the Curt Echo Under-Dash Trailer Brake Controller # C27JR that you're interested in for your 2018 Toyota Highlander, and I was able to sort out the confusion you're having. If you take a look at # C27JR you'll notice that there is a plug hanging off of the module. This is used to either connect to a vehicle-specific wiring adapter, which would plug directly into the under-dash junction box, or it will connect to a universal wiring adapter # C51515, which will then be spliced...
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  • Difference Between Curt Echo Mobile and Echo Under Dash Brake Controller
    There are a couple key differences between the Curt Echo Mobile part # C51180 and the Echo Under Dash # C27JR with the install harness part # C77BR. If you wanted the absolute easiest install that literally takes seconds go with the Echo Mobile as it just plugs into an active 7-way. That's it's biggest strength. The downside is that it's reception isn't as solid as the other option and it's a little more vulnerable being just plugged in outside of your vehicle. If you don't mind a slightly...
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  • 2023 Honda Passport Brake Controller Recommendation That's Easy to Install
    I highly recommend going with the Curt Echo Under-Dash # C27JR for your 2023 Honda Passport since it installs with the Custom Wiring Adapter # C51392 under your dash and then you use an app on your phone to monitor and adjust your trailer brakes. I also recommend picking up the Manual Override Button # C83HR so you can tow your trailer phone-free and still maintain access to the manual override function of the controller in the event of an emergency. Attached are some review videos for...
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  • Recommended Brake Controller for 2022 Ram 1500 Classic and How to Install It
    I can understand your hesitation about drilling a hole in your brand new dash, I'd be a little leery of that myself. If you have a smart phone, we have the perfect solution for you. Curt recently released the Under Dash Echo wireless brake controller, part # C27JR. The control unit installs under the dash, out of sight using the # C51458 brake controller harness that plugs into the tow package connector under the dash. The connector is located to the right of the steering column, above...
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  • Troubleshooting Curt Echo Trailer Brake Controller Blowing Fuse on 2023 VW Atlas With Factory 7-Way
    It sounds as though the Curt Echo # C51180 along with the power draw from your trailer is overloading the circuit on your 2023 VW Atlas with the factory tow package. You may be able to resolve your issues by checking to see what other circuits are drawing power from your 7-way and disconnecting those that are not necessary. As an alternative since you are able to use a Wiring Adapter # C29JR to install a brake controller you can mount the Curt Assure # C49UR to your dash. Or we do have...
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  • 2023 Ram 1500 Classic Trailer Brake Controller Recommendation
    Both the 2023 Ram 1500 and the 2023 Ram 1500 Classic use the same brake controller wiring adapter so for this circumstance you definitely can look through either fitguide, but there are other products that specific fits so I don't recommend making it a habit. Out of the available options I recommend the following: - Curt Echo Under-Dash # C27JR - Custom Wiring Adapter # C51458 With this system you'll monitor and adjust your trailer brake settings with an app on your phone but once...
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  • Recommended Trailer Hitch, Wiring, And Brake Controller For A 2019 Ford F-150 XLT
    Some models have a plug-in port to easily wire in a brake controller, but there isn't a way for us to know if the specific one you're looking at has this connection available without physically searching for it in the vehicle. "Tow Mode" on the shifter only affects the shift point for the engine to help protect it while towing and wouldn't activate the brakes on the trailer. If you really don't have a factory 4-way or 7-way connector at the back of the truck then you'll need to splice...
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  • Easiest Plug and Play Brake Controller For a 2024 Jeep Grand Cherokee
    The Curt Echo Under-Dash Bluetooth Brake Controller # C27JR will provide you with one of the easiest installations as the Pigtail # C51446 will connect it to your factory wiring. And unlike other controllers there is no dash mounted controller or knob so everything simply gets secured under your dash. Then you will control the settings for it with your smart phone using the OneControl app.
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  • Will Engaging The Override Button On The Curt Echo Disable Vehicle Braking?
    That's correct, any emergency like what you're describing would warrant the use of the manual override braking. The manual override function on the Curt Echo Under-Dash Trailer Brake Controller - Bluetooth # C27JR will be activated immediately and would also allow you to use your vehicle's brake pedal as well. The brakes will be engaged until you release the manual override on your trailer brake controller. I also recommend adding the manual override button # C83HR that way you don't...
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  • Location of Brake Controller Port on 2023 Jeep Grand Cherokee 4xe
    Hi Robert; it looks like your 2023 Jeep Grand Cherokee 4xe doesn't have a brake controller port since you don't have the tow package. This means hard wiring the # C27JR is your only option for installation. If have a plug and play wiring harness I would return it to whoever you bought it from.
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  • Recommended Trailer Brake Controller For a 2022 Ram 2500
    I recommend the Redarc Tow-Pro Elite Brake Controller # RED44FR for your 2022 Ram 2500. This will connect with the Plug and Play Wiring Harness # 331-TPH-020 to the under dash connector. I prefer this controller over the Curt Echo # C27JR with the Adapter # C51458 and factory options as it gives you more adjustability and is easily controlled with the dash mounted control knob. While the Curt is easy to install you have to control everything from your smart phone including adjusting braking...
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  • Curt Echo Under Dash Wireless Trailer Brake Controller For a 2017 Land Rover Discovery Sport
    With your 2017 Land Rover Discover Sport having the factory tow package wiring you will be able to connect the Curt Echo Under-Dash Wireless Brake Controller # C27JR using the Pigtail # C51322. The Manual Override Button # C83HR can be added if you do not want to keep your phone on with the app open to manually activate the trailer brakes when needed.
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  • Will Curt Echo In-Line Hold Up To The Elements
    The Curt Echo In-Line Wireless Brake Controller # C79DR is designed to sit under your vehicle so it will work just fine in any whether conditions you'll be facing - I would just avoid submerging it. This comes with a limited lifetime warranty which just goes to show how confident Curt is in their product. If the controller being exposed to the elements is a concern then I recommend checking out the Curt Echo Under-Dash Wireless Brake Controller # C27JR instead. This installs under the...
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  • Is the Curt Echo Wireless Brake Controller a Good, Safe, and Reliable Controller?
    Absolutely! When the Curt Echo Wireless Brake Controller # C51180 was first announced I was a little skeptical of the Bluetooth connection myself. The release actually went fairly smoothly and while they've had a few issues since then, I'm confident in promoting this controller as Curt has been able to iron out any bugs with their app. Once you have all of the settings in place the controller works on it's own, and the only thing you need the phone/app for is the manual override, but...
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  • Tow-Pro Liberty or Tow-Pro Elite? Which Redarc Brake Controller for a 2009 Chevy Avalanche?
    I recommend the Redarc Tow-Pro Liberty item # RED24FR over the Elite item # RED44FR because you get the best functions of the Elite at a lower price. The Elite can be a proportional brake controller along with a time-delayed one whereas the Liberty gives you only the proportional setting. You will want to use a proportional controller with your towing setup. I checked with our vendors and even though your 2009 Chevy Avalanche came with a factory installed towing package there is no port...
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  • Brake Controller For a 2021 Jeep Grand Cherokee Summit Completely Hidden Under the Dash
    It sounds like the Curt Echo Under-Dash Bluetooth Brake Controller # C27JR is exactly what you are looking for. You will need the Wiring Adapter # C51446 to connect to the factory connector under your dash for a plug and play installation. You will control the Curt Echo from your smartphone using the Curt Echo app while the main unit is mounted behind your dash. This means no controllers on the dash or holes to drill in your dash.
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  • Is There a Brake Controller Adapter Plug for 2022 Jeep Grand Cherokee L
    Yes, there is a brake controller plug under the dash on a 2022 Jeep Grand Cherokee L. I recommend using the Curt Echo Under-Dash Trailer Brake Controller part # C27JR with the Curt Custom Wiring Adapter for Trailer Brake Controllers part # C51446. The Curt Echo installs behind the dash so there is no drilling into the vehicle nor do you have to worry about taking up leg room. It uses your mobile phone for setup. The adapter then makes for a plug-in-play install.
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  • Can 2022 Subaru Outback Touring Have Bluetooth Brake Controller Installed
    Yes you can use a Bluetooth brake controller like the Curt Echo Under Dash part # C27JR or Mobile Echo part # C51180 in your 2022 Subaru Outback Touring. If you go with the Under Dash option you'd need the 7-way adapter kit part # ETBC7 or if you go with the Mobile Echo you'd need the # ETBC7L. If you do not have a 4-way connector currently you'd need that as well with the part # 118467. The Echo is easier to install since it plugs right into the 7-way socket but the Under Dash doesn't...
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  • Correct Harness for Curt Echo Under-Dash Trailer Brake Controller On 2017 Chevy Colorado
    In order to install the Curt Echo Under-Dash Trailer Brake Controller part # C27JR on a 2017 Chevrolet Colorado you'll need the Universal Wiring Adapter for Curt Trailer Brake Controllers part # C51515. There is no plug present under the dash, but the needed wires are already run. You will connect the brake controller wiring with the vehicle wiring already present under the dash. I have also attached a review video I did on this brake controller below.
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  • Will Curt Echo Under-Dash Brake Controller Work with Factory Tow Package on a 2022 Ram 1500 Rebel
    The Curt Echo Under-Dash Wireless Brake Controller # C27JR and Wiring Adapter # C51458 will work great on your 2022 Ram 1500 Rebel since it has the factory tow package but no factory controller! I really like this controller since it's inside the cab so you don't have to remember to grab it prior to towing, but it's also out of the way and doesn't take up any space inside the cab.
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  • Parts Needed and Method to Install Curt Trailer Brake Controller on 2007 Chevy Silverado
    You may or may not need an additional wiring harness to install the # C84VV. If your 2007 Chevy Silverado is the new body style you will not necessarily need the harness, but if it is a Classic you will need harness # C51352 because there is a port under the dash on the floor, on the far left. One end plugs into the controller, the other end plugs into the port. The port is located in a junction box. There is a black cover on the box. Remove the cover and plug in the harness in the top...
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  • Curt Brake Controller Wiring Adapter for a 2006 GMC Sierra
    We do have a plug-in adapter for your 2006 GMC Sierra, but the Curt # C51451 that you referenced is a fit for Chevy Silverado and GMC Sierra pickups starting in 2014. For your 2006 Sierra you want the Curt # C51352 instead. This adapter will plug into the junction box beneath your vehicle's dash as is demonstrated in the attached photos.
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  • Curt Brake Controller Not Working Correctly After Moving It From 2006 Silverado to 2001 Model
    If you are using the same wiring adapter in the 2001 as you had in the 2006 Silverado, it would explain the problem you're having. Both model years use the same plug, but after the 2002 model year, GM changed the pinout on the connector under the dash. The 2006 Silverado uses the # C51352 wiring adapter, while the 2001 model would use the # C51342. I've edited a photo for you showing the difference between the two connectors, you can move the red wire to the correct location by removing...
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  • Parts Needed To Install Curt Assure Trailer Brake Controller In 2007 Chevy Silverado 2500HD Classic
    I have another option for you, but your 2007 Chevrolet Silverado 2500HD Classic has a factory trailer brake controller port so there is no need to cut any wires. To replace your current controller with the Curt Assure Trailer Brake Controller with Dynamic Screen - 1 to 4 Axles - Proportional # C49UR you will just need the # C51352 which will plug into the factory trailer brake controller port underneath the dash of your truck. I included video reviews for both of the products mentioned...
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  • Troubleshooting Curt Brake Control Harness # C51352 Installation in 2007 Chevrolet Silverado Classic
    The Curt Brake Control Harness you reference, part # C51352, is compatible with both time-delayed and proportional brake controllers from Curt and is intended for vehicles with factory tow package wiring. As you noted, the connection port for the vehicle-side connector is under the dash in the electric junction box. The box interior is shown in the photo provided; the correct connection port for the harness (the second one from left on the top row) is highlighted in red. There are one...
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  • Recommended Wiring Harness For A Curt TriFlex Trailer Brake Controller In A 2003 Chevy Silverado
    The part #15085418 you referenced comes back as an OEM GM wiring harness, which you would have to go to a GM dealership to purchase. If you're just needing a wiring harness for the Curt TriFlex Trailer Brake Controller - 1 to 4 Axles - Proportional # C24VV that you linked to so you can plug it into your 2003 Chevy Silverado with factory tow package then you can use the Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In # C51352. This wiring harness will plug into...
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  • Comparing Tekonsha Prodigy P2 and Curt TriFlex Brake Controllers for a 2005 Chevy Silverado 1500
    The Tekonsha Prodigy P2 Trailer Brake Controller part # 90885 with the Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers part # 3015-P is what I recommend for a 2005 Chevrolet Silverado 1500 over the Curt TriFlex Trailer Brake Controller part # C24VV with the Curt Custom Wiring Adapter for Trailer Brake Controllers part # C51352. The Curt TriFlex and Tekonsha Prodigy are both good options with similar features but the Prodigy is much more proven and has been around longer.
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  • How to Install a Curt Brake Controller in a 2006 Chevy Silverado 1500
    You have installed correctly all of the components you referenced. The # C51110, # C51352, and the # HM40975. The issue you are experiencing is that the tow package wiring under the hood of your truck hasn't been completed like you suspected. The blue wire will need to get run to the brake output circuit of the 7-way you installed. Since this circuit isn't connected to anything that means the 7-wires that are at the rear of your vehicle aren't all ran. You will need to run a length of...
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  • Troubleshooting Curt Tri-Flex # C51140 Brake Controller Installation in 2006 Chevrolet Silverado
    Thank you for your recent purchases from etrailer.com. The quick-connect brake controller adapter harness you purchased along with your brake controller, part # C51352, is the correct one for your 2006 Silverado. Brake controller installation in your truck, if it did not have a factory tow package, requires you to complete some electrical connections and install fuses in the engine compartment, at the power distribution box. Since you also ordered a 7-way, I will presume your truck did...
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  • Why Isn't Curt Brake Controller Work on 2006 GMC Sierra 1500 After Install
    Under the hood of your 2006 GMC Sierra 1500 there are some connections that need to be made to activate the brake controller wiring. If you check out the help article I attached you can see what you need to do.
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  • Curt Trailer Brake Controller Does Not Power On when Installed on a 2007 GMC Sierra Classic
    There may actually be some additional connections that you will need to make under the hood. Take a look at the article I have linked that covers everything that you will need to do under the hood on your 2007 GMC Sierra Classic. First make sure you are plugged into the spot in the junction box in the top row, second from the left. Then make sure you have all the connections and fuses in the correct locations. It seems strange but also make sure the fuse you are using is a good fuse and...
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  • Brake Controller Does Not Work After Installation on a 2005 Chevy Silverado
    On certain year Chevy trucks there are additional connections that need to be made under the hood to make everything fully functional. I have included a link to an FAQ article to help you. Make sure that you are plugging in the harness into the spot on the top row, second from the left. The Curt harness you should be using is # C51352. With the brake controller plugged into the right spot and all the under hood connections made and fuses in place the brake controller should work just fine.
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  • Location to Install Brake Controller Power Fuse on 2003 GMC Sierra
    I am assuming you are speaking of the fuse that activates the power feed to the brake controller. The 30 amp fuse is installed in the power distribution box as shown in the photo I have edited. The power distribution box is located under the hood, on the drivers side on the fender well. I have linked you to an FAQ article that describes how to install a brake controller on a 2003 GMC Sierra.
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  • Trailer Brakes Will Not Work and 2006 Chevy Silverado Lights Malfunction w/Curt Brake Controller
    It sounds like the red wire in the wiring harness # C51352 was not in the correct place. Take a look at the picture I have included and make sure that the wires in your harness are in the same places. This is the end that plugs into the truck. It needs to plug in at the junction box under the dash, to the left. It will plug into the spot that is on the top row, second from the left. The wire functions are white for ground, black for 12 volt power, blue for output to trailer brakes, and...
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  • Curt TriFlex Brake Controller C24VV Does Not Show Red Dot on Display After Installation
    The Curt TriFlex Trailer Brake Controller, part # C24VV, and the matching harness for your 2007 Chevrolet Silverado Classic, part # C51352, will work with your vehicle as long as your 7-way connector on your rear bumper is not the type that includes LED test lights. Such 7-way connectors are not compatible with the Curt TriFlex. It is critical that before installing the controller the negative battery terminal be disconnected to avoid potential damage to the unit. Also, the trailer must...
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  • Most Economical Way to Add 7-Way & Brake Controller to 2003 Chevy Silverado 1500
    Hi Michael, What you'll need to do to add a 7-way to your 2003 Chevy Silverado 1500 is hardwire the Pollak 7-Pole, RV-Style Trailer Connector Socket w/ Wiring Harness and Mounting Bracket # PK11898. Since you don't have a factory 7-way, the wires to attach to this harness will be above the spare tire, and splice them. I have added a link below to a help article which shows you exactly what to do and where the wires are on your truck. And while 7-way doesn't come with a 4-way socket,...
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  • What Brake Controller Adapter for Curt Brake Controller on 2004 Chevy Silverado
    The correct brake controller adapter to use with your Curt Venturer Brake Controller # C74VV will be part # C51352, which will plug into the factory brake controller port. I've linked a installation video of this controller using the adapter for you to have a look at, as well.
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  • Troubleshooting Brake Controller Installation On 2003 GMC 3500
    When checking the brake output circuit of a 7-Way there should not be 12 volts of power all the time. A Curt brake controller will have what is termed 'dead' voltage at idle. This means there is voltage but no amperage draw. You can test for amperage instead of voltage to see if that is the case. If so, then you do not have a problem. If you are showing amperage draw that would indicate a short somewhere or possibly a problem with the brake controller. For a Curt brake controller, and if...
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  • Wiring Adapter Needed for Curt Reflex Trailer Brake Controller # C51130 on 2005 Chevrolet Silverado
    The wiring adapter needed to install the Curt Reflex trailer brake controller on your 2005 Chevrolet Z-71 Silverado is part # C51352. No cutting or splicing is required. Just plug the one end into the brake controller and the other end into the junction box under the dash. I have attached the installation instructions for you.
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  • Brake Controller Recommendation for a 2005 Chevy Tahoe with Factory Trailer Connector
    The Curt Echo Under-Dash Brake Controller # C27JR is an excellent choice for your 2005 Chevy Tahoe. I really like it because you mount it under your dash and then you have a clutter-free brake controller to use! The correct wiring kit to connect this to the tow package on your Tahoe is the Curt Adapter # C51352. This gives you a simple plug-and-play installation that takes any guesswork out of the wiring. We have a variety of other controllers to choose from but the Echo Under-Dash is...
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  • Install Harness for 2005 Chevy Tahoe for Curt Spectrum Brake Controller
    Yes the correct brake controller install harness for your 2005 Chevy Tahoe is the part # C51352 to install the Curt Spectrum # C51170 that you mentioned.
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  • Can Curt TriFlex Trailer Brake Controller # C24VV Be Temporarily Disabled When Backing Up
    I did some research on this controller for your 2006 Chevrolet Silverado, and there are no features available that will turn the Curt TriFlex Brake Controller, part # C24VV off. The best way to temporarily disable the controller when you intend to back up is to unplug the trailer. If you were to unplug the controller, it would have to be reset when it is plugged back in. I spoke with my contact at Curt and they strongly advised against doing this because if someone failed to reconnect the...
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  • No power to New Trailer Brake Controller Install on a 2007 GMC Sierra Classic
    You will likely have to make at least one connection under the hood of your 2007 GMC Sierra Classic to power the brake controller. You may also need a fuse. I have included a link to the right that shows the connections that you will need to make under the hood to make everything fully functional.
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  • Will a Brake Controller Install and Work Fine on a Truck with an ABS Brake Light On
    A brake controller like the Curt Venturer part # C74VV does not tie into the actual braking system of a truck like your 2004 Chevy Silverado so it would still work fine. As long as your brake lights are functioning properly on your truck a brake controller will function just fine since that is the only circuit it has to use to operate. To install this controller in your truck like the one you referenced all you would need is the correct install harness, part # C51352. I attached an install...
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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Sabrina W
Written by:
Sabrina W
Employee Amanda K
Updated by:
Amanda K

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