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Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In

Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In

Part Number: C51362
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Install your Curt electric trailer 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 port beneath your vehicle's dash. 1-800-940-8924 to order CURT accessories and parts part number C51362 or order online at Free expert support on all CURT products. Great prices and Fastest Shipping for Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In. Accessories and Parts reviews from real customers.
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CURT Accessories and Parts - C51362

  • Trailer Brake Controller
  • Wiring Adapter
  • Plugs into Brake Controller
  • CURT
  • Vehicle Specific

Install your Curt electric trailer 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 port beneath your vehicle's dash.


  • Plug-in wiring adapter allows for quick, simple installation of your electric trailer brake controller
  • No cutting or splicing required
    • Custom connector end plugs into the built-in port beneath the dash of your vehicle
    • Other end plugs into the back of your electric brake controller
  • Compatible with time-delayed and proportional brake controllers from Curt
    • Brake controller must have built-in plug for adapter to connect - will not work on controllers with pigtail wiring harnesses
  • 2' Long, 12-gauge wires have protective covering to deter damage
  • Limited 1-year warranty

Installation of Curt Brake Controller Adapter

To install your Curt electric brake controller, you need to connect the wiring of the controller to your vehicle. Certain auto manufacturers offer pre-wired options, typically known as tow packages, wherein wiring is run for you from the dash to the trailer connector on the back of your vehicle. When this is done, a port is installed at your dash so that you can easily plug in a brake controller.

This adapter plugs into the port on your vehicle's built-in brake control wiring harness. The harness is located underneath the dash, to the left of the steering column, and it is taped to another harness near the emergency brake pedal.

No hardwiring is required to install this adapter. After you plug it into the factory port, you simply plug the other end of the adapter directly into your electric trailer brake controller. Because there are no wires to connect, installation is not permanent. You can unplug and remove your brake controller at any time to transfer it to another vehicle or securely stow it away.

51362 Curt Quick Plug Brake Control Adaptor Harness

Installation Details C51362 Installation instructions

This Product Fits The Following Vehicles

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In - C51362

Average Customer Rating:  4.8 out of 5 stars   (230 Customer Reviews)

Install your Curt electric trailer 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 port beneath your vehicle's dash.


Easy installation, perfect length wiring and included 4 long zip ties which was the perfect amount to secure the wires out of the way.


Using the Curt wiring adapter, installing the Curt TriFlex brake control in my 2006 Toyota Tundra was simple after watching your video. Very pleased with everything I ordered from e trailer.


initially had trouble finding the Toyota connector since there was an unidentified cover on it but worked well after locating it

2010 Toyota Tundra

Yes I received my order and installed the brake controller. All seems to be
fine, although I have yet to tow with it yet. Here are a couple photos of
the installation in my 2010 Toyota Tundra.


I’ve owned 5 brake controllers. This is the only one I’ve disliked. This controller has non digital controls (should have been my first clue it might not be good) it just has two slide controls. Problem is two things, the slide controls themselves are black, the same color as the case on the unit and you can’t even see the position of the slide controls because they blend in with the color of the case. It’s impossible to tell if they’re turned down all the way, turned up all the way, in the middle? The other problem is that the slides are so imprecise, They slide way too easily and there’s no detents and I found if you even bump the unit slightly or are going over rough roads the slide switches migrate. I was towing a couple of weeks ago and I thought I had the switches dialed in as good as I could, I was on some rough roads, due to road construction in the area, the output switch vibrated over to maximum and the next time I hit the brakes , the trailer locked up completely. So I had to turn it off until I could get to the next town where there was a parking lot I could readjust. I’m definitely getting rid of this thing and I definitely recommend you do not buy it. Buy something with digital output controls so you know precisely where the settings are. I firmly believe this controller is dangerous and I know if I keep using it I’m going to get an accident.


plug in to factory harness without cutting orvsplicing. saved a couple hours working under dash. worth the cost. unfortunatelt harness adapter, brake controller or some other fault is causing random trailer brake lock-up without applying vehicle brakes at highway speeds, a scary event. unable to troubleshoot as winter snow then heart health issue continue to prevent me from moving trailer to troubleshoot.


The package was shipped and received 2 days early. It was delivered in perfect shape. I think I will be happy with this brake controller!


Using the harness is the best and easiest way to install a brake controller. The warranty on the controller is still valid since no wires have to be cut.

2011 Toyota Sequoia

Installed on 2011 Toyota Sequoia - Plug and play as advertised.

2010 Toyota Tundra

Well that was the easiest thing I've ever done on a vehicle. The info on the etrailer site was instrumental in this being a quick plug-n-play mount of the Curt brake controller. I watched the two minute video and 10 minutes later I had a new brake controller installed in my 2010 Tundra.

Ed D.


One year later and the install looks good and the Curt brake controller works as advertised, Im happy!


Made the install of the brake controller straight forward.

2012 Toyota Tundra

I installed the Curt TriFlex Brake Controller C51140 along with Wiring Adapter C51362 on my 2012 Tundra. Was super easy. Thanks for video.



Perfect. No issues at all.

2008 Toyota Tacoma

Teconsha P3 is an excellent brake controller.

better was the customer service from etrailer....I had an issue with another model, called etrailer, and they made it right. No questions asked. Will definitely shop with them again. Thanks, etrailer! -wade

Wade V.


Love the Tekonsha. Will not buy another Curt. Thanks for asking. And e-trailer was great, especially dealing with the dysfunctional Curt. Thanks.


Pending installation…


The wiring adapter was easy to connect and tuck up under the steering wheel to attach to the brake controller.


This wiring adapter fit perfect between the Curt Adventurer brake controller and the pigtail harness in my '06 Tundra. Remove the truck's driver side kick panel, cut the truck connector loose from where it was secured, and plug this adapter into both the truck and the brake controller. Plug and play.


Custom cable made my brake controller installation a simple project. Fit perfectly and took all stress out of the job. I would buy again without hesitation.

Jim W.


Yup, still working as supposed to. No complaints. Well worth the money.


Fit like a glove

2005 Toyota Sequoia

Great service!


The adapter for connecting the trailer brake controller arrived earlier than scheduled. It enabled a quick and easy plug and play connection of the controller to the vehicle.



Worked perfectly - plug and play

2017 Toyota 4Runner

Works well, easy to install. Sometimes the lights do not go off. I have to restart the 2017 4Runner and wait for them to go off.

2012 Toyota Tundra

Fast shipping! Great product for this price. My 2012 Tundra has airbag underneath steering column so I mounted brake controller just left of area.....perfect! Works like it came stock.

Kirk J.




Etrailers catalogue provided a complete & accurate description of the 8 items purchased. Placing the order by phone was fast & efficient. Items arrived within 4 working days, no tax no shipping charge. Professional all around.

Pat M.


The EOH braking system works perfectly. You are my supplier of choice if when I need additional trailer parts on the future.


Much smoother braking than the controller the RV dealer installed. Curt has excellent customer service.


Mating harness is perfect. Well made, quality connectors, proper length, time saver, priced right, a no brainer. Buy it!!!!!

Richard S.


Great. This controller is very consistent in applying dependable braking while towing our travel trailer. After dozens of trips and thousands of miles the unit continues to do the job. Very satisfied.

Show More Reviews

See what our Experts say about this CURT Accessories and Parts

  • Parts Needed To Wire Brake Controller From Brake Buddy Stealth To 2018 Toyota 4Runner
    With the Brake Control # HM39533 for the Brake Buddy Stealth # HM39530 having a hardwire design you will need to modify the Pigtail # C51362 so you will be able to connect it on your 2018 Toyota 4Runner. The pigtail contains the white end which will connect on your 4Runner so you will simply need to cut off the black connector and wire the controller to the portion left on the pigtail. The wire colors will all match from the controller to the pigtail. This pigtail uses the same connector...
    view full answer...
  • Brake Controller Recommendation for a 2007 Toyota Tundra w/ Factory 7-Way
    The brake controller that I recommend for your 2007 Toyota Tundra, due to its easy mounting and use is the Curt TriFlex NEXT Trailer Brake Controller # C24VV. Since you have the factory 7-way the only other thing you'll need is the Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In # C51362.
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  • Parts Needed For Installing Curt TriFlex Trailer Brake Controller On a 2014 Toyota Tundra SR5
    Yes, the Curt TriFlex Trailer Brake Controller # C24VV and Wiring Adapter # C51362 will fit your 2014 Toyota Tundra SR5 as long as you have the factory 7-way. This will be a plug and play connection. If you do not have the factory 7-way you will need the Universal Installation Kit # ETBC7 and a Wiring Adapter # C51515. This kit will allow you to connect a 4-way flat connector to the 7-way and provides the wiring needed to wire in the adapter for the brake controller.
    view full answer...
  • Are Circuit Breakers Needed to Install the Curt Triflex Controller with the Wiring Harness # C51362
    Yes, when you installed the Curt Triflex Brake Controller # C24VV by using the Curt Custom Wiring Adapter # C51362 you took care of the installation completely. The circuits that are used on your vehicle wiring that the # C51362 connected to are protected with fuses so everything is good to go. I attached an install video for the # C51362 for you to check out also.
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  • Wiring Harness to Install Curt Discovery Brake Controller on 2010 Toyota Tundra
    In order to install the Curt Discovery Trailer Brake Controller part # C84VV on a 2010 Toyota Tundra you'll need the Curt Custom Wiring Adapter for Trailer Brake Controllers part # C51362.
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  • Wiring Adapter for Curt Brake Controller on 2008 Toyota Tacoma
    If your 2008 Toyota Tacoma has a factory 7-way, the only thing you will need to install the Curt Discovery Trailer Brake Controller # C84VV is the Curt Custom Wiring Adapter # C51362 which will plug into the port underneath the dash of your '08 Tacoma. If your truck does NOT have the factory 7-way you would need to add 4-way # 118496 along with Universal Installation Kit for Trailer Brake Controller # ETBC7. You will also need to use Universal Wiring Adapter for Curt Trailer Brake Controllers...
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  • Parts Needed to Install Curt C51170 Spectrum Brake Controller on 2007 Lexus GX470
    For a 2007 Lexus GX470 with the factory 7-way installing the Curt # C51170 Spectrum brake controller would be a plug and play installation. Other than the # C51362 brake controller wiring harness, no other parts would be needed. The connector for the brake controller is located under the dash near the top of the emergency brake pedal.
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  • Where to Connect Brake Controller Adapter in on a 2014 Toyota Tacoma with Factory 7-Way
    If your 2014 Toyota Tacoma came with the Factory 7-Way then you will want to look next to the driver side kick panel for the wiring harness. I have attached a video of the Tekonsha P2 # 90885 being installed on a 2012 Tacoma that you can reference. This installation video shows the Plug-In Wiring Adapter # 3040-P being installed for the P2 which will be the same as Curt Adapter # C51362 for your Curt brake controller. If your connector is not located there then let me know and I can...
    view full answer...
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  • Where to Plug In Curt TriFlex NEXT Brake Controller on 2015 Toyota Tacoma
    Thanks for the purchase, and the brake controller port on your 2015 Toyota Tacoma will be up above and to the left of the emergency brake pedal for plugging in the Curt TriFlex NEXT Trailer Brake Controller # C24VV with the Plug-In Wiring Adapter # C51362. The plug is rectangular in shape, and I have added a couple of photos for you showing both the orientation of the plug-in port as well as what it looks like so you can get a good idea of what you are looking for.
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    Image 1 for Image 2 for
  • Wiring Harness to Connect Tekonsha Prodigy P3 to 2016 Toyota Sequoia with Tow Package
    Hey David, I have an alternative solution for you to connect your Tekonsha Prodigy P3 # 90195 brake controller to the tow package wiring on your 2016 Toyota Sequoia, but right now the parent company of Tekonsha was bought out and nobody knows what's going on with their parts so a lot of that stuff is in a state of "limbo" until they get their act together. What I recommend doing is buying the Curt version, part # C51362, and then cutting off the black connector and splicing those wires...
    view full answer...
  • Will a Curt Brake Controller Wiring Harness Fit a Hayes Brake Controller on a 2012 Toyota Tacoma
    Curt brake controller wiring harness # C51362 is only a fit for Curt brake controllers but you could use it if the Hayes controller you have has wires and a plug or just wires sticking out of the back. But if it just has a socket for a plug then you cannot. It looks like all of the current Hayes controllers, see link, do have wires and a plug sticking out of the back. What you would do is cut off the connector on the brake controller if present and remove the connector on the curt harness...
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  • Is The Curt Echo Under-Dash Compatible With a 2009 Toyota Tacoma?
    Yes, you will be able to use the Curt Echo Under-Dash Wireless Brake Controller # C27JR on your 2009 Toyota Tacoma. The Curt Custom Wiring Adapter # C51362 will connect to the factory connector if your Tacoma has the factory tow package. Otherwise you will need to Universal Adapter # C51515 if you are adding a 7-Way # ETBC7.
    view full answer...
  • Help Finding Brake Controller Install Port on 2018 Toyota Sequoia
    On your 2018 Toyota Sequoia the factory brake controller plug is located underneath and to the left of the steering column, taped to another harness near the emergency brake pedal. There will be a 5-pin connector that mates with the one on harness # C51362. I have linked a video showing this harness being installed on an older Sequoia to show you the general location and what it looks like. You may have to remove the kick panel next to the emergency brake pedal and it could be tucked up...
    view full answer...
    Image 1 for
  • Which Install Harness to Install Curt Spectrum in 2003 Toyota Sequoia
    The correct install harness is the part # C51362 to install the Curt Spectrum part # C51170 in your 2003 Toyota Sequoia.
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  • Install Harness for Curt Brake Controller Installed on 2014 Toyota Tundra
    To install a Curt brake controller like the Assure part # C49UR in your 2014 Toyota Tundra the correct install harness would be the part # C51362. I checked with them and was not able to find a different harness they recommended.
    view full answer...
  • Correct Curt Brake Controller Adapter for 2005 Toyota Tundra w/ Factory 7-Way
    In order to get you the correct part I would need to know what brake controller you have as well as if your 2005 Tundra has a factory 7-way or not.
    view full answer...
  • Recommended Trailer Brake Controller for 2016 Toyota 4Runner
    I'd be pretty wary of using velcro or tape to install a brake controller. If it should come loose and fall without you noticing, the controller would not work correctly and could put you in danger. I've heard of folks that used 2 sided tape to install the controller and had the controller come loose from the dash when they went to use the brake override switch, so I'd recommend installing it by mounting it to the dash as explained in the instructions. The holes needed to mount the controller...
    view full answer...
  • Electric Trailer Brake Controller and Wiring Harness for 2015 Toyota Tacoma
    To use the Curt Spectrum Trailer Brake Controller # C51170 on your 2015 Toyota Tacoma, you will want the Curt Custom Wiring Adapter # C51362. It sounds like you may have a pigtail harness with exposed wires on one end and this adapter plug for under your dash on the other. If that is the case you may use that, but you will need to then use butt connectors and cut the quick connect end of your brake controller. I've attached a couple videos to assist.
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  • Troubleshooting OL Code On Curt TriFlex Trailer Brake Controller W/ Trailer Unhooked
    Since your Curt TriFlex Trailer Brake Controller - 1 to 4 Axles - Proportional # C24VV you have is showing OL (overload) code even when trailer is unplugged that means that there is a short in the blue trailer brake output wire. I recommend cutting the blue wire of the # C51362 you have installed in the factory trailer brake port of your 2011 Tundra. If cutting the wire makes the code go away then there is a short somewhere between the trailer brake controller and the 7-way connector and...
    view full answer...
    Image 1 for
  • Installation of RedarcTow-Pro Elite Trailer Brake Controller on 2006 Toyota Tacoma
    When installing the Redarc Tow-Pro Elite Trailer Brake Controller # RED44FR on your 2006 Toyota Tacoma there will be a little bit of wiring required. In order to plug this brake controller into your factory wiring harness you need the Tekonsha Custom Wiring Adapter # C51362 along with the # 331-TPH-019. One end of this wiring harness will connect to the wires on your brake controller using the included butt connectors. Once this is connected to the wiring harness on the # RED44FR you...
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    Image 1 for
  • Plug And Play Brake Controller on 2009 Toyota Tacoma With Factory 7-Way
    I assume your 2009 Toyota Tacoma with the factory tow package has the factory 7-way. If it does, then yes, a brake controller installation will be completely plug-and-play. For this the brake controller and wiring adapter a great option is the Curt Discovery NEXT Trailer Brake Controller # C84VV with Plug-In Adapter # C51362.
    view full answer...
  • Fit of the Curt Wiring Adapter # C51362 and Venturer Brake Controller on a 2006 Toyota Tundra
    Yes, if your 2006 Toyota Tundra has the 7-way trailer connector already installed, then the Curt Venturer Brake Controller, # C74VV, and Curt Wiring Harness, # C51362, is the confirmed fit. However, if you do not have the 7-way installed, then the you will need the Curt Wiring Harness, # C51515, with the Curt Venturer Controller. Along with this, a 4-way and 7-way trailer connector is necessary to install the brake controller. The Vehicle Wiring Harness Kit w/ 4-Pole Trailer Connector...
    view full answer...
  • Location of Brake Controller Connector on a 2014 Toyota Tundra
    I believe that the photo you sent in is of the OBD-II port on your 2014 Toyota Tundra. This is useful if your vehicle is throwing codes but it is not used for the brake controller. As long as your Tundra has the factory 7-Way at the rear of the truck then the Wiring Adapter # C51362 is the correct part for you to install the Curt TriFlex Trailer Brake Controller # C51140. Try looking to your left behind the side kick panel next to your emergency brake pedal. I have attached both a photo...
    view full answer...
    Image 1 for Image 2 for
  • Recommended Brake Controller and Adapter for a 2009 Toyota Tundra w/ the Factory Tow Package
    Since your 2009 Toyota Tundra has the factory tow package, you will want the Curt Custom Wiring Adapter item # C51362. This adapter will plug into a port which is under the dash to the left of the steering column. You will be able to use this adapter to install the Curt Spectrum Trailer Brake Controller item # C51170 without having to cut or splice wires. The Universal Wiring Adapter for Curt Trailer Brake Controllers item # C51515 you referenced, is for vehicles without the tow package....
    view full answer...
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