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7-Way RV Upgrade Kit for Trailer Brake Controller Installation - 12 Gauge Wires

7-Way RV Upgrade Kit for Trailer Brake Controller Installation - 12 Gauge Wires

Item # ETBC7L
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If you have only a 4-way flat on your vehicle and want to install a brake controller that pulls power from a 7-way trailer connector instead of wiring directly into your vehicle, this kit will adapt your plug for use with your brake controller. Call 800-298-8924 to order etrailer accessories and parts part number ETBC7L or order online at etrailer.com. Free expert support on all etrailer products. Guaranteed Lowest Price and Fastest Shipping for 7-Way RV Upgrade Kit for Trailer Brake Controller Installation - 12 Gauge Wires. Accessories and Parts reviews from real customers.
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etrailer Accessories and Parts - ETBC7L

  • Trailer Brake Controller
  • Installation Kit
  • etrailer

If you have only a 4-way flat on your vehicle and want to install a brake controller that pulls power from a 7-way trailer connector instead of wiring directly into your vehicle, this kit will adapt your plug for use with your brake controller.


Features:

  • Kit allows you to use a trailer brake controller that pulls power from your trailer connector instead of wiring into your vehicle
    • Great for use with Tekonsha Prodigy RF (90250), Autowbrake (3430001), and Curt Echo (C51180) trailer brake controllers
  • Pre-wired 7- and 4-way trailer connector mounts easily at rear of vehicle with included bracket
    • Plugs into existing 4-way trailer connector on vehicle
  • (20') 12-Gauge wire lets you run power from your vehicle's battery to the trailer connector
    • General Purpose Thermo-Plastic (GPT) insulation is highly resistant to acids, gasoline, oil, grease and most industrial solvents
  • Heavy-duty, 30-amp circuit breaker protects your vehicle's electrical system by preventing overload
  • Installation hardware included
    • Ring terminals for battery and breaker hookup
    • Self-tapping screws for attaching circuit breaker and ground
    • Zip-ties for securing loose wires


Note: If your vehicle does not already have a 4-pole flat trailer connector installed, the etrailer application guide can be used to find the easy-to-install connector made specifically for your vehicle.


57672 Connector Diagram



7-Way RV Upgrade Kit for Trailer Brake Controller Installation - 12 Gauge Wires






Customer Reviews

7-Way RV Upgrade Kit for Trailer Brake Controller Installation - 12 Gauge Wires - ETBC7L

Average Customer Rating:  4.3 out of 5 stars   (33 Customer Reviews)

If you have only a 4-way flat on your vehicle and want to install a brake controller that pulls power from a 7-way trailer connector instead of wiring directly into your vehicle, this kit will adapt your plug for use with your brake controller.

- ETBC7L
by:

received in a timely matter and was good quality 791982



- ETBC7L
by:

The videos and help were invaluable in connecting all of the wires for the power and brake control. The video was even on the exact model that I was putting the connector on. There are three difficult procedures in the installation. 1) Getting a connection to the brake light under the dash is very difficult as there is very little room. I would have liked to see how the tech was able to determine which wire was the correct one to use and extend it in order to make a splice. I removed the brake switch from the bracket which allowed me to pull it down enough to test each wire and find the one that went live with the brake pedal being used. 2) Making a hole in the firewall to pass power, ground and the brake control wire. Here the video was spot on. The difficulty is that the firewall is about 12" behind the ducting on the engine side and there is not much room inside to work. I used a 24" 1/4 drill from the engine side to start a hole in a good place. Using a drill from the inside the hole was than enlarged to what was needed. 3) Routing the wire from the engine to the back. Here the video did not go into detail as to how the fish the wire through and over the various components. Having a high lift would definitely help here. The remaining connection and wiring was straight forward. I used expandable braided shielding on all of the wires to bundle them together and add additional abrasion resistance. As an added safety measure, inexpensive rubber boots were used to cover the exposed connections on the breakers. Without the boot, the studs would be exposed even with the engine covers in place. 647400



- ETBC7L
by:

This product is good but has a few problems preventing it from being great. First it doesn’t include the screws and washers that you need to actually connect it to your hitch. Second and the most important factor is that the kit barely has enough wire to hook up a small SUV let alone a mid or full size one. Save yourself some headaches and buy a new set of wire before you even start. The wire came up feet short in my Kia Sorento but only figured this out after running it all the way to the engine to have it stop. 670202



- ETBC7L
by:

Easy install, Perfect setup to mate to my Subaru wire harness! 613156



- ETBC7L
by:

Had to modify for my 2017 Wrangler JKU. Muffler is too close to bumper frame, so had to mount the bracket to the edge so wires would clear heat of muffler. Bumper bottom is not flush with frame. Could not open 7-pin connector cover all the way, had to mount it sideways. So I had to drill new holes in mounting bracket. There is not enough wire to properly route. Had to add 4 feet. 638383



- ETBC7L
by:

I bought a few different items and had a wonderful lady over the phone who helped me picking out the right stuff and also to save me money. I gave everything 5 star rating except for this one. The reason is two-fold. 1) the instruction video was not good at all and the look and setup of the car in the video was different than mine which forced me to do solutions on my own which feels so and so since I'm neither a car mechanic nor an electrician. Also, the most difficult part of it all, to snake the wire to the front, was shown by flashing the camera for a few seconds... instead i had to remove covers underneath the car and improvise on my own 2) the kit wasn't complete and I had to make runs to the hardware store to buy extra bolts/nuts to assemble the bracket. And the wire itself was barely long enough to make it to the battery which was another reason I had to come up with my own McGyver solutions and wasn't able to follow the guiding instructions from the video. In short, the installation took way longer than expected and left me worried if it'll work. It is done and is working so far, but I would recommend an updated video and more generous length of wire plus extra bolts/nuts for future kits... 628631



- ETBC7L
by:

Everything works, but , the 4-way flat connector will not stay on the bracket, but I will figure out a better way to attach it. 855028



- ETBC7L
by:

Pretty simple to install, and it’s been great for a year. Only wish I had a little more ground clearance. Where I mounted the wiring harness receiver should have been a little higher, but I can’t fault the MFG for that. 851906



- ETBC7L
by:

Excellent product. Easy to install 849948



- ETBC7L
by:

My ETBC7L arrived on time. I was able to find a you tube video that was published by etrailer that provided a detailed and easy to follow assembly instructions to install the adapter on my 2019 Toyota Highlander XLE. 837275



- ETBC7L
by:

Great product and easy install. 836898



- ETBC7L
by:

Grounding wire is way too short. Self tapping screws were garbage and didn't work even when pre drilled. Not great. 829571



- ETBC7L
by:

Hooking up and using this brake controller was as easy as could be. 826212



- ETBC7L
by:

Worked very well the minute we set it up and got it paired. It was hard to tell if the trailer was responding since it appeared to pull and stop very evenly from the very beginning. I used the ETBC7L 4 pin flat to 7 pin converter kit. I connected the black power cable to the battery and hooked up the ground and BINGO it worked. It was a lot of work to get the black power feed cable from the controller to the battery but once it was all connected the controller just plugged right into the 7 pin adapter and the trailer plugged into the controller. I did have issues with it losing connectivity to my phone but that didn't seem to stop it from working. Great service from the folks at trailer. I paid for two day shipping and it arrived in two days in great condition. I bought the controller and the 4 pin to 7 pin converter kit together. 814484



- ETBC7L
by:

I regret buying this. There were a few missing pieces when it arrived and furthermore, what they don’t tell you, is that this harness has a power cable that goes directly to the battery. If you have a trailer and don’t completely undo the connection after you turn your car off, the lights will stay on and it will drain your battery. It should have came with the extra $40 part they try to sell you after the install. Surprise!!!!! If you want a dead battery, buy this harness. If you want it to work the way it should, plan on buying an additional $40 part. Pretty pitiful and misleading If you ask me. 805244



- ETBC7L
by:

LOVE THE PRODUCT SO EASY TO USE,MAKE SURE YOU USE DIELECTIRC GREASE ON THE CONNECTIONS. ETRAILER ALSO MATCHED THE PRICE AND REFUNDED 10.00 THE CUSTOMER SERVICE IS GREAT 804552



- ETBC7L
by:

Works fine. Only problem is getting battery power for the trailer brake. On my 2020 Kia Telluride I had to run a wire from the battery to the unit. 801376



- ETBC7L
by:

This is a fairly simple kit to install. The video for the Wrangler really was helpful. Running the wire up the frame is probably the most difficult thing. The only thing I have to complain is that the bracket that holds the connector could be at least one gauge thicker or have some kind of reinforcement or gusset. I use a wireless brake controller and the weight pulls it down. And the wire could be about one foot longer. 798633



- ETBC7L
by:

Easy to install 797529



- ETBC7L
by:

Easy install to add wirelss brake contr oller 790729



- ETBC7L
by:

Product works well, needed to fabricate a custom mounting bracket for a cleaner look. 789576



- ETBC7L
by:

Wire kit came with everything needed to install on my 2020 Subaru Outback. Took some time to make sure the 12v power was ran safely from the battery to the plug but easy to find a good path. I threw away the bracket that came with the kit as my curt hidden receiver didn’t have a mounting place. I used the curt easy wording bracket that goes over the collar of the hitch and supports the 4 way and 7 pin adapter. I also used the curt plug and play wire adapter for the 4 pin harness and cut a hole in the drain plug for it to run out the spare tire area and into the wire harness. 779792



- ETBC7L
by:

This fit ALMOST perfectly on my 2007 Tacoma. I zip tied the four pin trailer connection to the tow vehicle harness. Besides the four pin, I only needed the black power wire because I am using a Curt Echo bluetooth brake controller. I ran the power wire along the frame, into the cab, through the firewall and to the battery via the included breaker. I zip tied the unused wires to the harness and wrapped the whole thing in electrical tape. The included bracket almost fit my OEM four pin mount perfectly. The holes were a bit too narrow but I just had to widen them with a drill bit pressing outward. The setup looks stock and I'm very pleased with it. 777861



- ETBC7L
by:

Perfect for my 2018 Highlander. Tows my teardrop camper like a dream! 778031



- ETBC7L
by:

Just installed this today. 769965


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Ask the Experts about this etrailer Accessories and Parts

  • Which 4-Way to 7-Way Trailer Wiring Adapter Allows Trailer Battery Charge Circuit to Activate
    Since your plan is to install a brake controller and want to charge the camper battery what you need is actually the part # ETBC7. This comes with basically the same things as the # ETBC7L except it also includes wiring and circuit breaker to complete the brake controller circuit that you use for charging the trailer battery. I attached a video that shows this kit installed on a similar 2011 Subaru Outback for you to check out as well. The brake controller in the video is our best selling...
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  • Best 7-Way Plug Option and Brake Controller For 2016 Toyota Highlander With Tow Package
    I suggest using the 7-Way RV Upgrade Kit part # ETBC7L and the Curt Echo part # C51180 because of the ease of installation and convenience. The Curt Echo Mobile Trailer Brake Controller just needs the basic trailer lighting functions and 12V power to be fully operational. Just wire the 12V black wire from ETBC7L to the vehicle's battery via the circuit breaker, ground the white wire and connect the 4 pin to the 4 pin portion of the plug shown in the picture I attached. The rest of the wires...
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  • Will the 7-Way RV Upgrade Kit ETBC7L Charge the Trailer Battery When Using Curt Echo
    The 7-Way RV Upgrade Kit for Trailer Brake Controller Installation part # ETBC7L and the Universal Installation Kit for Trailer Brake Controller part # ETBC7 will both still charge your trailer's battery even when using the Curt Echo Mobile Trailer Brake Controller part # C51180. The onlybdifference between these two kits is that the latter comes with extra wires and circuit breakers which are needed for a in-cab brake controller but you could still use this with the Curt Echo as well if...
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  • Why Isnt the Blue and Yellow Wire Needed In Curt Echo Installation
    I am happy to explain why the yellow wire and blue wire are tucked away in the installation video of 7-Way RV Upgrade Kit for Trailer Brake Controller Installation part # ETBC7L. The ETBC7L is a kit used to install the Curt Echo Wireless controller part # C51180 which only requires a 12V power feed from the vehicle's battery and ground wire. The blue wire (which is used for brake output) is not needed because the Echo uses an internal sensor to sense when the vehicle's brakes are applied....
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  • How Does Curt Echo Plug Into a 4-to7 Pole Adapter on a 1999 Chevy Suburban 2500
    To install the Curt Echo Brake Controller # C51180 on your 1999 Suburban with a 4-to 7 Pole adapter, like the one on our # ETBC7L 7-Way RV Upgrade Kit, you just need to plug it into the 7-Pole on the adapter. As long as it was installed correctly, and the rest of the connections were made, the adapter's 7-Pole will contain all of the trailer light functions that were originally on your 4-Pole flat connector, plus the additional functions for trailer brakes, 12V power, and reverse lights...
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  • How To Install a 7-Way on a 2017 Ford Expedition XLT
    If you already have a 4-way trailer connector on your 2017 Ford Expedition and you need a 7-way trailer connector then I have two options for you. Please note that if the trailer you are towing has a 7-way trailer connector then odds are this is because it has brakes therefore you will need a brake controller as well. The first option I have for you requires the least amount of modifications to the tow vehicle and it will be the easiest to install. This option entails both the 7-Way...
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  • Adding 7 Way to 2018 Jeep Renegade with existing 4 Way Wiring
    The easiest way to add a 7 way connector to your 2018 Jeep Renegade that already has a 4 way trailer connector attached is going to be using the # ETBC7L . This allows you to minimize the wiring work required and keep your existing 4 way plug for future towing setups that may need it. After plugging in the # ETBC7L into the 4- way on your vehicle you'll need to wire the remaining wires as follows: White - ground Blue - brake controller Black - hot lead - 12 volt power supply Yellow...
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  • Brake Controller Recommendation For 2020 Kia Telluride
    The Curt Echo Mobile Trailer Brake Controller part # C51180 will fit any vehicle that has a 7-way plug with a power wire to the vehicle's battery and a good ground connection. It is not in the fit guide yet for the 2020 Kia Telluride (August 2019) but you will not have any issues using the Curt Echo brake controller with the Telluride as long as you have an active 7-way plug. If you do not have a 7-way plug on the Telluride, you will need a 4-pole connector to start with part # 118784...
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  • Why Does Black Wire of ETBC7L Run to Vehicle Battery
    If you have a power wire ran to your current 4-way wiring it's to power the taillights of your trailer from the battery instead of your vehicle taillights. The 12 volt power wire of the # ETBC7L is then for providing a 12 volt power source to the trailer or for a brake controller that installs on the trailer like the Curt Echo Mobile part # C51180. I attached a review video for this for more info on this kit as well.
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  • Correct No-Drill Mounting Bracket for 7-Way RV Upgrade Kit for Trailer Brake Controller Installation
    The 7-Way RV Upgrade Kit for Trailer Brake Controller Installation part # ETBC7L can be mounted with the Curt No-Drill Bracket for 6-Way or 7-Way Round Trailer Connector Mounting Bracket part # C57202.
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  • Installing 7-Way Connector and Brake Controller on my 2014 Audi Q5
    If you currently have a working 4-Way plug then using the 7-Way RV Upgrade Kit for Trailer Brake Controller Installation Kit part # ETBC7L kit is a great way to get a powered 7 Way connector on the rear of your 2014 Audi Q5. You can use the Curt No-Drill Bracket part # C57202 to attach the 7-Way to. The bracket will mount around the tube of your hitch and really does a great job staying solid. With this kit using the Curt Echo part # C51180 is an easy way to add a brake controller...
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  • Is a 7-Way Needed For Trailer Brake When Towing With a 2016 Honda Odyssey
    Correct, you will need to use a 7-way trailer connector in order to tow a trailer with brakes. The 4-way trailer connector simply does not have the extra pins needed for the trailer brake and battery charge circuits. The good news is that it is super easy to install a 7-way and brake controller on a 2016 Honda Odyssey thanks to the invention of wireless brake controllers that eliminate the need to splice into the vehicles wiring or run a bunch of wires from the cab to the battery. I...
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  • Could 12 Volt Wire for Trailer Wiring Also be Used to Power Circuit of Curt Echo Brake Controller
    The power wire of the # 119250KIT would not be rated high enough to carry enough amperage for both the # 119250KIT and the Echo part # C51180. So what you'd want to do is run the wire that comes with the # ETBC7L along the same routing to get the the vehicle battery and you'd be set. This also prevents a short in the trailer wiring from potentially shorting out the brake controller and damaging it since they will be on separate circuits. Having two 12 volt wires ran to your battery would...
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  • Upgrading 4-Way to 7-Way Trailer Wiring on 2014 Subaru Outback with No Brake Controller
    It sounds like you are on the right track with everything here. You can use the Hopkins part # 37185 to convert your 4-pole connector to a 7-pin connector, but this is just the adapter. We've built a complete kit for this exact situation and it includes everything you need to have a fully functioning 7-pin trailer connector minus the in-cab brake controller, part # ETBC7L. This is what I recommend for you and it comes with a better 4-pin to 7-pin adapter. You will want to run the 12...
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  • Is Wire Needed for Brake Controller Wiring Kit # ETBC7L on 2015 Hyundai Santa Fe Limited Ultimate
    For your 2015 Hyundai Santa Fe Limited Ultimate the T-One Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector # 118269 is a very easy installation. The plug location is under the vehicle on the driver's side and requires no running of additional wire to power your 4-way. That does change when you add the 7-Way and brake controller as you will need to run at least the 12V power wire (the brake controller output blue wire does not get connected and the yellow...
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  • Comparing 4-Way to 7-Way Adapter and ETBC7L Kit
    The main difference is just what you said, the # A10-7084VP is only the adapter and the # ETBC7L includes the bracket, connectors, a circuit breaker, and 20 feet of wire. The other significant difference is the adapter included with # ETBC7L has a 4-way and a 7-way so you don't lose the existing 4-way on your vehicle which is important to some people. It's similar to part # C57672 which also includes the bracket but not the other parts of the # ETBC7L
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  • Will Curt C51108 Echo Pass Through 12-Volt Power to Maintain Trailer Mounted Battery
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    A 4-way trailer connector does not have enough power for a trailer jack; ideally a trailer battery is what you'd want for a jack, however some jacks do have a power plug for a 7-way connection like you are seeking. What you can do is get the # ETBC7L which will connect to your 4-way and then run the included wire and circuit breaker to your battery. You will only need to connect the current 4 way and then add the 12V wire and connect the ground to the vehicle frame. The brake controller...
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    If you will be using the Curt Echo Mobile Trailer Brake Controller part # C51180 then the 7-Way RV Upgrade Kit for Trailer Brake Controller Installation part # ETBC7L is preferred as it does not come with a bunch of extras you will not need. In regards to installing this, all you will need to do is run the single black wire that comes with the kit from the black wire on the back of the 7-way up to the vehicle's battery with a circuit breaker in between and then ground the white wire from...
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  • Adding a 7-Way to 2013 Porsche Cayenne
    To add a 7-way to your 2013 Porsche Cayenne that will allow you to pull a larger trailer and use a brake controller I recommend the 7-Way RV Upgrade Kit # ETBC7L. This is very similar to the Universal Installation Kit # ETBC7 with the difference being that you will not have to wire the lead from the brake controller to the brake output pin on the 7-way. This will make installation easier but keep in mind there are only certain brake controllers that the 7-Way RV Upgrade Kit # ETBC7L...
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  • How To Power Trailer Battery Charge Line Only While Vehicle Is Running Using 4 to 7-Way Adapter
    In order to have the trailer battery charge line circuit keyed (only on with ignition) on a vehicle without tow package you will indeed need to run a power wire to the battery from the trailer connector. I recommend the 7-Way RV Upgrade Kit for Trailer Brake Controller Installation part # ETBC7L. However, you'll also need the Tow Ready Battery Isolation Solenoid part # TR118665 which will tie into a keyed circuit on the vehicle like the ignition to shut power off the battery charge line...
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  • Parts Needed to Convert 4-Way of 2020 Honda Odyssey to 7-Way for Brake Controller
    To convert the 4-way of your 2020 Honda Odyssey to a 7-way so that you can use a brake controller and power the electric jack on your trailer you'll need the part # ETBC7L which comes with everything needed. If you don't have a brake controller already the easiest one to use and install is the Curt Echo part # C51180 as basically you just plug it into an active 7-way and once synced to a smart phone is ready to be used.
    view full answer...
  • Does ETBC7L Have a Reset Switch
    The 7-Way RV Upgrade Kit for Trailer Brake Controller Installation # ETBC7L does not have a reset switch. There are no videos but the 12 volt wire will simply be routed underneath your vehicle in a route of your choosing. The 12 volt accessory plug cannot be used as a power supply it does need to be powered directly to the vehicle battery. Attempting to use the 12 volt accessory plug can potentially interfere with the electrical systems of your vehicle, which you want to avoid, and can...
    view full answer...
  • Easiest Way To Wire A 7-Way With Brake Controller To 2019 BMW X5
    I do have an option for you but there is not a 7-way custom connector available for the 2019 BMW X5. You will need to use the ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat Trailer Connector and Installation Kit part # 119250KIT to install a 4-way flat on the BMW and then a 7-Way RV Upgrade Kit for Trailer Brake Controller Installation part # ETBC7L for the 7-Way. Once you have the 7-Way RV Upgrade Kit for Trailer Brake Controller Installation installed you can plug your...
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  • How To Tow a Trailer with 7-Way and Brakes Using a 2015 Ford Explorer With 4-Way
    In order to allow a 2015 Ford Explorer to be able to tow a trailer with brakes you will need to install a 4 to 7-way adapter. For this, the Universal Brake Controller Install Kit part # ETBC7L is what I recommend. This kit is almost completely plug-n-play, you will have to plug the two 4-way ends in together, ground the white wire, and then you will have to run a power wire up to the battery with a circuit breaker in-between but that is all. The kit will work just fine with your wireless...
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  • Converting 4-Way Trailer Connector to 7-Way to Charge Trailer Battery
    You're almost there. You also want that circuit to be protected so you also need a circuit breaker. I recommend using our # ETBC7L kit because it includes everything you need. You said you have an adapter already. If your has the wirng already you can connect it's 12 volt circuit wire to your battery through a breaker. In this case use part # 10-1-1 and a circuit breaker # 9510.
    view full answer...
  • Where is the Blue Brake Output Wire Ran When Using the Curt Echo
    The blue electric brake output wire from the back of the adapter on part # ETBC7L will not be needed when using the Curt Echo Mobile Trailer Brake Controller part # C51180 as the controller operates off an inertia sensor and the stop light switch circuit. The blue wire can just be taped off and secured to the vehicle. The black 12 volt power wire on the adapter will however still need to be ran to the vehicle's battery with a 40 amp circuit breaker placed 6" from the positive terminal.
    view full answer...
  • Is There an Adapter to Convert a 4-Pole to 7-Pole to Run a Brake Controller?
    The best adapter for your application is # ETBC7L. This kit includes everything you need to install a 7-way on your vehicle and the kit is easy to install. Most wireless controllers don't need the brake circuit so it will not be included or needed with this adapter. Once your adapter is installed, the Curt Echo part # C51180 is an awesome brake controller to run for your application. The Echo requires your 12 volt power from the 7-pole. This controller pairs to your phone and works with...
    view full answer...




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Info for this part was:

Expert Research:
Mike L
Expert Research:
Jameson C
Expert Research:
John H
Video by:
Andrew K
Video by:
Michael B
Edited by:
Lindsey S
Video Edited:
Joshua S
Video Edited:
Jacob T
Video Edited:
Chris R
Installed by:
Kathleen M
Installed by:
Cole B
Updated by:
Sarah W
Updated by:
Kristina F
Test Fit:
Shane H
Test Fit:
Robert C
Test Fit:
Ryan G
Written by:
Mike S

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