Part Numbers: TK90160,3035-P
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This proportional brake controller has simple controls and a digital display for diagnostic information. Includes 3 boost levels, a slide-bar manual override, built-in battery protection, automatic leveling, and continuous diagnostics.
Features:
Specs:
You can adjust the gain (also known as output) with the thumbwheel on the front of the controller. Gain lets you set the maximum amount of power that will be applied to your trailer's brakes. A heavier trailer will need more power to achieve smooth, safe braking, while a lighter trailer will need less. Typically, the gain is only readjusted when you experience changing road conditions or if the weight of your trailer changes.
The boost setting controls the aggressiveness of your trailer's braking, meaning how quickly the brakes reach the maximum braking level. You can adjust this when you're towing heavy loads and you need more umph to bring your trailer to a stop. Your tow vehicle doesn't need that much power to brake in time, but your heavy trailer does.
Depending on the level of boost, your trailer brakes can start at either 13 percent or 25 percent of the set gain. What this means is that, instead of starting at 0, the brakes will start at 25 percent and get to 100 percent sooner. This keeps the trailer from pushing your tow vehicle forward.
If your trailer weighs less than your tow vehicle, no boost is needed. But, if you want your trailer to lead the braking, you can select level B1.
Boost Levels:
| Approximate Gross Trailer Weight | Boost Level | Increase in Initial Power Output |
|---|---|---|
| Less than tow vehicle GVW | B1 | 13% |
| Equal to tow vehicle GVW | B1 or B2 | 13% or 25% |
| Up to 25% more than tow vehicle GVW | B2 or B3* | 25% |
| Up to 40% more than tow vehicle GVW | B3* | 25% |
*Both B2 and B3 offer a 25-percent boost in initial power. But the braking curve for B3 is more aggressive than that of B2. This means that, even though you will start out with the same intensity when using these boost levels, you will get an overall more aggressive braking experience with the higher level. So if you use B3, you will reach maximum braking sooner than if you use B2.
To adjust the boost, use the blue push-button on the top of the Primus IQ.
The Tekonsha Primus IQ comes with an easy-to-reach, slide-bar manual override, great for stopping sway or controlling your trailer's momentum in emergencies. To engage the manual override, just push the slide-bar to the left, towards the center of the controller. This will activate the trailer's brakes and brake lights without you having to apply the brakes on your tow vehicle, perfect for limiting trailer movement while you're cruising.
The Primus IQ can mount between -90 degrees and 90 degrees vertically, but the brake controller still needs to be horizontally level and parallel with the direction of travel.
After mounting the Primus IQ unit in your cab using the included bracket, hardwire one end of the included pigtail harness directly into your vehicle. The other end plugs into the brake controller. To remove the IQ for storage when you're not using it, just unplug the unit and slide it out of the bracket. With a replacement wiring harness (sold separately) and replacement bracket (6927 - sold separately), you can even transfer the IQ to another vehicle.
See etrailer.com's exclusive 7- and 4-way brake-control installation kit (ETBC7 - sold separately) if you don't already have a 7-way plug at the back of your vehicle
Note: If a custom brake control wiring adapter is not available for your vehicle, one of the following will be required:
The Tekonsha Primus IQ brake controller comes equipped with proportional braking to give you the best towing experience. 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 will activate with the same intensity; 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 Primus IQ uses an internal inertia sensor to detect 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 slow at the same rate. The result is uniform braking across your towing setup. No push-pull action - just smooth, proportional braking every time.
California residents: click here
Is this right for you? Product Expert Kathleen M says:
Install your electric brake controller quickly and easily with this custom wiring adapter. Simply plug one end of the adapter into your brake controller and then plug the other end into the built-in harness beneath your vehicle's dash.
Features:
For most applications, the factory plug is located beneath the dash, near the center console. If you have a Ford full-size van, the harness is underneath and to the left of the steering column. The Ford Explorer and Mercury Mountaineer have 6-pin connectors behind the glove box on the passenger's side. On a Ford 2010 Flex, the connection point is under the front edge of the dash directly below the steering column. On a 2013 Ford Explorer, the connection point could be behind the driver's side kick panel. On a 2014 Ford Explorer, the brake controller port is located by the steering column.
To install your electric brake controller you need to connect the wiring of the controller to your vehicle. Certain manufacturers offer pre-wired options, typically known as tow packages, wherein these wires are run for you from the dash to the trailer connector on the back of your vehicle. Often, a brake controller wiring harness is included with your tow package. This harness plugs into a port beneath your dash and connects to the four wires of the brake controller. If, however, you have a brake controller with a plug in place of the four loose wires, you can use the Tekonsha adapter.
This adapter requires no hardwiring. It is designed to plug directly into your electric brake controller for the simplest installation possible. Because there are no wires to connect, installation is not permanent. You can unplug and remove your brake controller at any time and securely stow it away.
California residents: click here
Average Customer Rating: 4.9 out of 5 stars (3800 Customer Reviews)
This proportional brake controller has simple controls and a digital display for diagnostic information. Includes 3 boost levels, a slide-bar manual override, built-in battery protection, automatic leveling, and continuous diagnostics. Install your electric brake controller quickly and easily with this custom wiring adapter. Simply plug one end of the adapter into your brake controller and then plug the other end into the built-in harness beneath your vehicle's dash.THANKS for the Brake Controller unit from ETrailer. It arrived w/in 5 days from your MO location to my So CAL residence.
Even as an Engineer/Scientist from the Delta IV rocket program and no experience with brake controllers, I was able to install this unit by myself. Your continued (live human) support and online video clips proved to be the key elements to this installation...without my symbolic pocket protector.
I have attached a few images of the unit, mounted to the fuse-panel cover (3/16 attachments with locking hex nuts) in a 2006 Toyota 4Runner SR5 (with factory tow package). The placement of the unit onto the panel cover allows a new panel cover (no holes drilled) to be used when it is time to sell the vehicle.
I ordered the trailer brake adapter harness for my 2010 full size Range Rover.
It fit great and its well made to do the swap,
for others that will read this here is how.
I found the brake connector in the truck was hidden behind the fat harness thats next to the inside left kick panel, just behind the hood release panel
By pulling on the OBD 2 wire harness, I found it was tied to the OBD harness.
Some say that the connector is on the left side of the steering column , in my truck is was on the far side of the fat harness so it was hard to see.
I had to remove the left side console, I removed the screw, then pulled the bottom of the wood panel towards the left door, the 2 pins released, then the panel slides to the rear of the truck to dislodge the top pin.
5 screws secured the lower panel , remove the lamp ,unplug it,
then remove the OBD 2 connector from its mount , slide the gray collar to the left kick panel then the harness pushes up out of its holder.
Plug in your new adapter harness for your trailer brake controller,
Assemble is the reverse of taking it apart.
in the picture the new harness is connected to the gray connector
I ordered a Draw-Tite 5535 Brake Controller & adapter cable 3035-P from etrailer for my 2011 Ford Holiday Rambler F53 Chassis RV to tow my Tow Dolly with electric brakes. I ordered the parts on Saturday and received them on Thursday using economy shipping rate which was great. I received just what I ordered and installed them today (Friday) everything worked perfect and the install was very quick and easy.
0543.jpg is my Brake Controller 5535.
0544.jpg is my Adapter Cable 3035-P.
0548.jpg is a picture of the Ford Factory cable in the RV.
0535.jpg is a picture of the end of the Ford Factory cable that the Adapter Cable 3035-P plugs into.
0550.jpg is a picture of the Brake Controller 5535 installed to the right of the steering wheel.
Lester
3/16/2020
Great no problems, Plug & Play made a hard job easy.
Product was delivered on time. Installation vehicle was a 2012 Ford Expedition Limited with factory tow package and was a breeze. I purchased the pre-wired pigtail which fit the Ford connector with no problem. I used the snap-in plastic bracket, mounted on the knee panel as close as possible to the center console. I held the bracket in place using painters tape to check the mounting position before driving in the self tapping screws. Start to finish was less than 10 minutes. I pull a 29' tandem axel travel trailer which comes in around 7,000 lbs and so far, stopping has been smooth and even with no jerking.
I have installed the Tekonsha Primus IQ Brake Controller with the ETBC7 Brake Controller wiring kit on my 1990 Chevy Blazer Scottsdale. Everything that I needed was included and the installation instructions were simple. We will be trying it out for the first time in early November when we are going to rent a small travel trailer. If we like the experience we may buy a travel trailer to go with our brake controller! Before and after pictures attached. Thanks for the quick service and support.
Multiple products which I purchased from Etrailer to upgrade my Capri Rodeo truck camper. The steps are well made, easy to setup, and extremely helpful in entering and exiting. I set them next to the door when travelling. The trailer brake controller smoothed out the jerking that was a problem for far too long and simple to install. The vent cover was definitely needed as the original had a hole in it. The removal and replacement went well.
Ron G.
11/21/2019
All the items are quality products and still working well.
Pictures of the install. Approximately a 20 min job. First picture my finger is pointing to the factory plug with the etrailer supplied harness plugged in. Note the harness did not specify that the white common with the ring terminal should be connected to ground. But then again that SHOULD be obvious. I will be towing this weekend so I will rate the product then. One minor gripe is that there is always power to the unit which is a battery drain (as evidenced with the key out of the ignition and the unit stayed on) Not sure as to the impact but the controller can always be unplugged or removed.
Sorry for the dirty floor mats in the photos.
I'd ordered the Tekonsha Prodigy P2 Proportional Trailer Brake Controller (1 to 4 Axles ) on a Monday with a Wednesday delivery date of two days, as I'd specified. I have a Lincoln Navigator that had the factory installed heavy tow package. I had also ordered the adapter connector for Prodigy P2 controller to the Navigator's factory plugin. The entire install took me 15 minutes. I found the video review of the controller quite helpful as it demonstrated how to static set the controller's setting before drive trials and how to set the "boost" settings. Good price and very easy to install.
Michael M.
8/23/2019
The device is still working as advertised!
I haven't towed with the it yet. But installation on my 2007 Ford F150 was pretty simple. The plastic panel I attached it to had steel behind it. So I removed the plastic panel, mounted the bracket, then trimmed the excess length off the screws, and reinstalled the panel. The wiring harness plugged right into the truck's plug under the steering wheel. It seems like a great product, and having the specifc wiring harness for my truck made it simple to install. Sheila was very helpful too. Thanks.
Stephen
11/25/2018
Ive been using it now for a year. It works great!
installed on a 2009 F-150 everything was as advertised. It was plug and play. My truck had the wire plug behind the dash so was easy to hook up. I installed it in the hole below the coin holder. To reach the pre-wired plug you have to remove the panel anyway. I don't like any wires showing or anything I might hit with my leg. So did not mount it on the lower dash. You have to pull the plastic box out to unplug the connector. So just cut off the back of the box off and run the connector through the hole and connect to the controller. This way you can remove the controller anytime you want. Also you can see the readout much easier then mounting it on the lower dash. See pics
Worked out perfectly for me, super easy installation with adapter harness. Work's flawlessly, easy one hand gain control with control's on front. My truck had nice cubby it fit in so out of the way and seamless look. Thanks for a great product and service.
Tom
6/14/2022
Working great, easy install
The brake controller we purchased and had professionally installed works perfectly. We had it installed in our RV for use when towing a large vehicle trailer. It's reliable and simple. It was a great purchase!
Exactly what I needed to install my Tekonsha Primus IQ brake controller in my 2021 Ford Explorer. The install video from eTrailer was perfect and made the install really easy!!
Michael
5/16/2023
No issues a year later. Wiring adapter still doing its job!
I've been running the Tekonsha Primus IQ for just over a year now. Very pleased w/ it.
Simple set up & operation. I tow a variety of trailers w/ my '07 2500 HD including dump trailer w/ firewood, car hauler, and enclosed cargo trailer. The weights are anywhere from empty, to 5k. Very easy to adjust as conditions change. I borrowed a trailer from a family member and the controller picked up a short. Come to find out a wire was pinched from ramps being slid in on the underside. The digital screen notified me before loading it up and hitting the road. I would recommend this product.
Works like a dream on my single axle 3200 lb travel trailer and my 2017 Toyota Tacoma. Like many of the other Tacoma owner reviewers, I mounted my Tekonsha Primus IQ controller in the small cubby to the left of the steering wheel and ran a couple screws up through the lower switch access to mount the bracket hidden inside the dash. Ended up looking like a factory install, exposing just enough of the unit to access the controls and read the display.
This is a great controller, recommended by my trailer manufacturer. I actually don't know too much about it, how it works, etc. But it doesn't require much knowledge to use it. Install it like instructed by etrailer it just works. You can see the number goes up as you apply more pressure on the brake pedal, and the trailer stops with no problem. It's magic.
The only thing I wished they do is to supply a longer length of the thin wire to connect to the break line. For my 2013 CRV, the break line you need to tap into is on the left side of the steering column, if you want to install the break controller on the right side, the wire is a little so short; but you can make it, it's just a little tight. I want to install the break controller to the right side of the steering column because I don't want to accidentally bump into it every time I get in and out of the car. It's a great, the best product though.
Installed quickly an easily into my 2009 GMC Sierra 2500HD by wiring up to the factory harness. Be sure to watch the etrailer.com video to see which wires need connected at the fuse box in the engine compartment! (Easy hook-ups, just need to make sure you see which ones get hooked up and where.)
And if you don't use your ash tray, these brake controllers squeeze nicely into the ash tray compartment/recess in the lower part of the dash. Makes a great place to keep most of the controller out of the way and it's easy to install (you will have to create 2x new holes in the plastic detachable controller mounting bracket but its very easy - you can see the mounting screws in the 'new' holes and the old holes go unused as shown in the photo).
Only had a trailer hooked up once, but the controller functioned as designed. I think the 'Boost' function will come in handy if I use a well-loaded trailer and need some additional stopping power from the trailer.
Easy plug and play installation on my 2007 Mountaineer. So much better than having to wire the whole thing myself.
Wayne S.
8/19/2022
Still working just fine. The Tekonsha controller and adapter performed fine on a long tow from NJ to OK and back last year, and I suspect they will continue to work just fine in the future. Definitely the way to go if the factory wiring is present.
Shipping was great. Stared at it for a couple of days before unpacking. The trailer connector mounting was easy with the holes almost matching the existing holes on my 2013 Toyota Highlander. The first four wires are a snap, they are just plugged into the existing four pin connector. I routed the two wire cable towards the front using ty wraps and improvised L brackets fixed to existing chassis screws.
I mounted the Circuit Breakers on the inside of the left fender making sure there was hood clearance (see photo). Then I hit a snag. There was no easy way to get the brake and 12V power wire to the brake controller inside the car. For grins, I goggled "brake controller video" for my car and came up with a video made by "eTrailer." (Thank you eTrailer) Three things from the video helped me: wire access from inside the car through the firewall, a place to mount the controller and how to locate the brake wire. After the installation I had 18" of two wire cable left over. The install took me about six hours. (I'm 71 and I took my time.)
A couple days later I connected the trailer for a test ride. The brake controller worked like a dream.
Things I liked: Retaining the four wire trailer plug setup next to the seven wire trailer plug. Controller display works but you don't have to look at it. The two wire cable was adequate for the job. Being an Engineer (retired) I worry about things like that.
Thing I didn't like: The mounting plate for the trailer plug is a little weak. A stiffer plate would have been better suited for me. and, oh yeh, somebody else to install it. ;=)
Took me about 10 minutes to install on my 2000 Chevy Silverado. Plug and play.
I installed the Tekonsha Primus IQ Brake controller in my brother's 4 Runner just before he and his wife took their small (18 ft) camper on a month long trip out west. It did what was expected of it... Proportional brake control, with little adjustment after initial set up!
Installed in my 2014 GMC Acadia in about 30 minutes. Used the GMC plug-in wiring adapter. No problems. Looks like it was made for that location.
2011 f150 3.5EB XLT superCrew. Easy plug and play install with the harness I bought also on etrailer, the problem was mounting. I hated the way the supplied mounts looked and didn’t want to bump into it. With some careful measuring and a hacksaw I was able to mount it inside the “plastic cup thingy” that fills the void where the factory controller would be. Attached pictures, the factory plastic cup thingy screws keep it locked in place and the supplies screws let’s you mount the controller into the plastic cup. Looks crooked with the white/silver plastic covering but it is aligned with direction of travel and level, also berey snug and mounted solidly.
IT WORKED PERFECTLY. This is my first time to purchase, install, and use a brake controller. Add to top it off, it was my first time to pull a trailer. It was on a Saturday, exactly six days before a scheduled tent-camping trip, when my wife found a good deal on a used pop up camper. The camper was equipped with electric brakes, so it was required to install a brake controller on my SUV. It was Sunday (next day) when I ordered the Tekonsha TK90160, along with the other necessary part numbers #118449, #A0500, #18136, #ETBC7. I was planning to take the parts to a shop to have it installed as soon as I received them. I was hoping I can get them on Tuesday, but UPS dropped it off to the local post office, which caused it to be delivered at 3pm on Wednesday afternoon. The shops that I went to either did not have an installer available, or were all booked for the week. I had to "take courage" and install it myself. I am so thankful that etrailer.com provides extensive videos of reviews, installation, and operation of the products that they sell. I made the connections as shown and hoped for the best. I picked up the camper on Thursday, and was sooo relieved that it worked perfectly. We took off on Friday and the camping trip was a success. We are looking forward to making more good memories with our camper. Thank you etrailer!
Installation was straightforward with help from the online videos. I also installed the ETBC7 universal installation kit. At first I thought etrailer had shorted some parts, but it turns out that the 18140 bracket is sold separately. Had to take back the choice words I uttered under breath. Ended up mounting the provided bracket directly to the hitch with screws which was a little more difficult. As a safety measure--and a little on the overboard side--I also used a dremel to cut a small slit in the center of the provided bracket so I could attach a hose clamp similar to the one in 18140.
Space inside the cab for mounting the brake controller was tight.
Nonetheless, all works fine per my test meter. Don't yet have a trailer to connect, but meter checks out fine.
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Stan K.
3/12/2018
This harness works as it should, a good product,