To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
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Install your Redarc Tow-Pro electronic brake controller (sold separately) quickly and easily with this custom wiring adapter. Plug one end of the adapter into your Tow-Pro brake controller and plug the other end in beneath your vehicle's dash.
Features:
California residents: click here
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Brad Hello neighbors. It's Brad here at etrailer. And today we're taking a look at the vehicle-specific wiring harness, that will work in conjunction with the Tow-Pro Elite electric trailer brake controller. These harnesses are going to be great to work with your Tow-Pro Elite in a variety of different trucks and SUVs. Now, make sure that you get your vehicle-specific harness. You're going to want to use our fit guide on "etrailer.com", and that's going to make sure that you get the right harness, and that way your install goes nice and easy.
Included in the REDARC kit, you will find this plugin adapter, and this is going to have these spliced ends, and you're gonna have to tie into your brake signal, your brake output, your power output and your ground. Now, if you are pretty handy with electrical, that's awesome. That's great. You can use this. But I'm the kind of person, plug and play in OEM kind of setup or really nice factory one like this.
This is the vehicle-specific harness. So this ties in directly to our factory tow system, and clips right in, it's got this nice braided sheathing on it, to kind of protect the wires, and then it plugs directly into our module here. So, to save yourself a little bit of headache and time, and make the install go that much smoother, and not have to worry about loose connections, I highly recommend getting the vehicle-specific harness. So this end of the plug is specific to your vehicle. As you can tell, it looks like the factory plug, it fits in perfect, has the locking mechanism, so you aren't gonna have to worry about loose connections happening with your plug, and it's going to make install a lot easier.
And that was a look at the vehicle-specific harness for the Tow-Pro Elite electric trailer brake controller..
The break controller works great...no problems. I've since sold the single axle trailer and purchased two more, one single axle new and one double axle used. I plan on stripping the cargo trailer and replacing the breaks and anything else that needs it for the suspension, creating a type of mini-home or tiny home on it. Thanks for reaching out. I will use your services for this new build. Thank you and keep up the good work!
You’ll need this plug and play harness to hook up your Redarc trailer brake to your Gen 3 Tacoma. Works great
It makes everything work, what more do you need in a wiring harness!
This kit makes installation a breezy. Hardest part is finding the factory connector buried up behind the dash along the firewall. Everything else is plug-and-play.
This wiring harness made the install in my Tacoma very easy. The hardest part was finding a place to mount the controller but I just used an L bracket as per one of the etrailer install videos. etrailer is the best!
Perfect fit making installation a snap.
Very quick shipping and the harness fits perfect.
Extremely easy to install on my 2023 Tacoma - plugged into the factory wiring harness without any trouble.
It's exactly what I needed. It allowed me to connect my Redarc controller to my new pickup without needing to purchase a new controller. So far it has been working perfectly. The documentation that came with the cable was a little confusing. A technician took the time to call me back and explain where to find the correct connector on my pickup to plug the cable into. What a fantastic team. Every time I deal with them, they are so helpful, professional, and an absolute pleasure to work with!
James 
5/8/2024
Even though I dont use it all the time, when I do use it, it works perfectly as well as the Redarc brake controller I also purchased from eTrailer. The team at eTrailer is absolutely the best!!! They are always a pleasure to work with.
Put it on my 2023 Toyota Tacoma because factory didn’t come with one. Install was pretty straight forward and seems to work quite well with my trailers. The adjustment nob is nice and the way I mounted it looks almost factory.
Hell of a lot easier than trying to wire it myself. Plugged right in to the 2023 tacoma plug that was hanging out in the back.
Josh
7/22/2024
No issues at all. Still works just as good as the day I installed it.
Everything I purchase from etrailer is of top caliber and shipping is always fast!
This wiring harness worked great on my 2020 Toyota Tacoma. Made the installation of my redarc tow-pro elite so easy.
Well, It fits just great, I have to wait for the dash board trim to really know. But so far so good
very simple installation, and the system works great
Harness made install quick. Tacoma’s trailer harness is behind the driver’s side kick panel. No tools required to pop the kick panel off just pull carefully. Trailer connection is all the way back against the firewall behind some other wires. There is a grounding screw about 6-8” in front of the harness connection on the exterior wall.
If your vehicle is equipped with the factory electronic brake connection then this plug and play harness is well worth the money. Makes the install as easy as it can get.
This made the installation of my Redarc Tow-Pro Brake Controller a breeze!
Works perfectly on a 2021 Tacoma w/OEM tow package. The whole thing (controller, wiring harness, rotary switch) is literally a 20 minute install if you've ever added a switch in one of the blank spots in a Tacoma before. Easy DIY job.
Nice simple plug and play harness with factory style quality connectors
The whole package installed easily
These panels with the Redarc brake controller provide a factory install appearance in your truck. Excellent product.
Lwal
12/15/2023
Excellent controller and still working extremely well.
The controller has worked flawlessly. Install was a little more than I expected, but worth the effort.
Perfect fit for my 2022 Tacoma! Plug and play as advertised. The video instructions made it self-explanatory. The Redarc controller worked the first time and has performed perfectly ever since (pulling my Winnegbago Micro-mini). etrailer is my go-to place for all my trailer accessories.
Directions for location of where to plug in the harness weren’t correct, but YouTube answered that question. Other than that, very good.
Info for this part was:
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Samuel
2/11/2025
It still works great!