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Curt Universal Wiring Kit for Trailer Brake Controllers - 10 Gauge Wires

Curt Universal Wiring Kit for Trailer Brake Controllers - 10 Gauge Wires

Item # C51500
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Curt Accessories and Parts - C51500
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This universal wiring kit lets you install a trailer brake controller (sold separately) in your vehicle. Designed for use on vehicles not equipped with factory tow packages. Installation requires 7-way trailer connector (sold separately). Call 800-298-8924 to order Curt accessories and parts part number C51500 or order online at etrailer.com. Free expert support on all Curt products. Guaranteed Lowest Price and Fastest Shipping for Curt Universal Wiring Kit for Trailer Brake Controllers - 10 Gauge Wires. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (10)
  • Q & A (10)
  • Photos
  • Why etrailer?

Curt Accessories and Parts - C51500

  • Trailer Brake Controller
  • Installation Kit
  • Curt

This universal wiring kit lets you install a trailer brake controller (sold separately) in your vehicle. Designed for use on vehicles not equipped with factory tow packages. Installation requires 7-way trailer connector (sold separately).


  • Universal kit includes wiring and hardware required for installation of your trailer brake controller (sold separately)
    • Designed for use with vehicles that are not equipped with factory tow packages
    • 7-Way trailer connector (sold separately) required to complete installation
  • 10' Long duplex cable houses (2) 10-gauge wires
    • Black wire connects brake controller to car battery
    • White wire acts as ground
  • 20' Long, cross-linked, 10-gauge wire connects brake controller to 7-way trailer connector at rear of vehicle
  • 30-Amp circuit breaker protects your vehicle's electrical system by preventing overload
    • Provides protection for vehicles towing trailers that have up to 8 brake assemblies
  • Ring terminals attach to wires so you can connect leads to circuit breaker and battery posts
    • (2) #10 Ring terminals
    • (2) 3/8" Ring terminals
    • (2) 1/2" Ring terminals
  • 3 Butt connecters for joining wires
  • (8) 8-1/2" Long cable ties let you secure loose wires
  • Limited 1-year warranty

Curt Universal Brake Control Wiring Diagram

51500 Curt Univeral Brake Control Wiring Kit

Installation Details C51500 Installation instructions

California residents: click here

Customer Reviews

Curt Universal Wiring Kit for Trailer Brake Controllers - 10 Gauge Wires - C51500

Average Customer Rating:  4.3 out of 5 stars   (10 Customer Reviews)

This universal wiring kit lets you install a trailer brake controller (sold separately) in your vehicle. Designed for use on vehicles not equipped with factory tow packages. Installation requires 7-way trailer connector (sold separately).

- C51500

The wiring cable that is supposed to come from the back is not long enough, this product is misleading to be used to connect the brake controller. 149366

It really depends on the vehicle the controller is being installed on, which is why we point out the length of each piece of wire in the description. 20 feet is enough for most SUVs and trucks, but a large cargo van or trucks with 4 doors and an 8 foot bed may need more.
-- Patrick B - 09/03/2014


- C51500

etrailer products and service are excellent! With their helpful videos and staff (plus a little help from Curt Manufacturing and our teardrop trailer manufacturer (CampInn)) I was able to install electric brakes on the trailer, and a controller in my vehicle by myself. I had never installed electric brakes before. Everything works perfectly! 774200

- C51500

Still works great and was easy to insta ll. 770456

- C51500

Excellent company. shipping was FAST! and everything that was shipped was exactly as I ordered it. everything worked and hooked up great. Also they have great resources, such as wiring diagrams and install vids to help with assembly! I strongly recommend this company for anyone doing work on their own trailer. 661569

- C51500

Thanks for fast response. Awesome! I am travelling but happy that's waiting for me home. Great day! 563555

- C51500

product arrived quickly and was just what it said it was; and just what I needed to wire in my brake controller. Worked great. 519340

- C51500

Works great and includes all necessary parts. Thanks 474623

- C51500

This is not a review of the product. The service was excellent. Since I had been sent the wrong cabling etrailer was very helpful in getting me the information necessary for me to return the parts I did not and to make sure I obtained the proper product in a timely manner. Good work and thanks - Alan 238180

All is well with your equipment and the trailer it was installed on Nothing new to add*
Alan W - 03/12/2017


- C51500

The black/white bundled wire was not long enough for my 2015 Honda Fit, had to purchase another 8 feet to cover the length from back to front. Blue wire is longer and the instructions expect you will use it for the brake controller. This is certainly long enough at 20 ft but the 10ft wire is insufficient. Should have given you 20ft a piece for each. 167647

- C51500

Great product and you can't beat etrailer.com's prices and fast shipping. 128743


Ask the Experts about this Curt Accessories and Parts

  • Wire and Breaker Recommendation to Complete 12 volt Power Circuit on a 2006 Ford Explorer
    The Curt Universal Wiring Kit for Trailer Brake Controllers # C51500 that you referenced comes with all the wiring to install a brake controller, but if you want to complete the 12 volt power circuit on the 7-way you will need to also purchase a 40 amp breaker like part # 9510 and then 10 gauge wire part # 10-1-1. The # 10-1-1 is sold by the food so you would need to order a quantity of how many feet you would need. I would order longer than you think you will need just to be safe.
    view full answer...
  • Curt Brake Controller Wiring C51500 vs. DrawTite 5506 for Wiring Up Brake Controller
    You are on the right track for installing your brake controller in your 2008 Jeep Grand Cherokee. The part # 5506 does include more than you would need if you aren't making the 12 volt circuit complete so instead the Curt part # C51500 would be all that you need. The # 5506 would be the kit to use if you needed the 12 volt circuit.
    view full answer...
  • Troubleshooting Curt Venturer Trailer Brake Controller on 2002 Chevrolet Silverado
    It sounds like the wiring harness under the dash of your 2002 Chevrolet Silverado does not have power running to it. To test this, use a circuit tester like # 40376 to check the connector. If this is the problem, you will need a Universal Wiring Kit for Brake Controllers # C51500. The install instructions are attached. You'll also need to modify the factory harness in your truck a bit. On the factory harness cut the battery wire leading to the factory connector leaving enough room...
    view full answer...
  • Circuit Breaker In Curt Universal Brake Controller Wiring Kit Is Making Noise
    I called my contact at Curt and they told me you should never hear the circuit breaker resetting for a couple reasons. The breaker would only reset if there is an excessive draw on the system causing it to reset. I would check to make sure it is secured close to the battery as the instructions state and that all of the wiring is secured in place and there is no other draw on the system. My contact said they have not had anyone complain that the circuit breaker is making any noise. If...
    view full answer...
  • Compatible Tow Wiring and Brake Controller for 2013 Toyota Highlander
    The T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118449 is a great fit for your 2013 Toyota Highlander. Then you can use the Adapter 4 Pole to 7 Pole and 4 Pole w/Test Lamps # C57674 you referenced along with the Wiring Kit # C51500. This will work with the Curt Echo # C51180 you referenced. The Curt Trailer Hitch Receiver - Custom Fit - Class III - 2" # 13534 is a custom fit for your vehicle so these parts all will work well but I also recommend using the #...
    view full answer...
  • Recommended Brake Controller And Wiring For 1995 Toyota T100 Pickup Truck
    Since you have no brake controller port on your T100 truck you will need to hardwire the brake controller. Your truck has separate wiring so you can use a circuit tester like part # 40376 to find a wire that shows power only when the brake pedal is pressed. Many times the wires are run along the driver side under the door threshold. The brake controller I recommend is the Prodigy P2, part # 90885. This is our most popular because it is easy to install and operate. There are 4 wires...
    view full answer...
  • How to Install the Tekonsha Prodigy P3 Brake Controller on a 2017 Audi Q7
    Since you said that your hitch, drawbar, and 7-Way connector were all factory installed the best scenario would be if there was some wiring under the driver's side dash of your 2017 Audi Q7 that you simply splice the 4 wires of the Tekonsha Prodigy P3 # 90195 to. If this is the case you will simply splice the following colors to the correct functions: White - Ground Black - 12V Power Red - COLD Side of Stop Light Switch (only gets hot when brake is pressed) Blue - Brake Controller...
    view full answer...
  • Brake Controller and Install Kit Recommendation for 2016 Subaru Outback Wagon with 7-Way
    Since you already have a 7-way on your 2016 Subaru Outback wagon the correct brake controller install kit you would need is the part # C51500 as it is basically the ETBC7 without the 7-way. This comes with the wiring for the controller to power it and connect it to the 7-way. For a brake controller I would recommend the Prodigy P2 Brake Controller part # 90885. This is our best selling brake controller because of how well it works and how easy it is to setup. This is a proportional...
    view full answer...
  • Brake Controller Recommendation for a 2014 Jeep Wrangler Unlimited Towing Offroad Trailer
    For a brake controller for your 2014 Jeep Wrangler Unlimited you have a couple options for towing your off road trailer. If the majority of the roads you plan on traveling will be similar to most public roads I would go with a proportional brake controller. The one I would recommend would be the Prodigy P2 # 90885. This controller has the most flexibility in how it can be mounted. If the majority of the areas you plan on taking your trailer will be slow speed areas with odd angles...
    view full answer...
  • Completing Brake Controller Output Circuit on a 1998 Dodge Ram
    The easiest way to install your brake controller is going to be to run the blue wire of the controller back to the 7-way with ten gauge wire like our part # 10-1-1 (sold by the foot). Trying to track down factory wiring on the older Dodge trucks can be a bit of a headache and this will bypass all of this. Or you could use just the # C51500 that comes with the wiring you would need to hardwire the brake controller to your vehicle. This comes with power and ground wires for the controller,...
    view full answer...

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Info for this part was:

Edited by:
Leah B
Written by:
Lindsey S
Expert Research:
Jameson C
Expert Research:
Jeffrey L
Updated by:
Sarah W
Updated by:
Kristina F
Updated by:
Isabelle B

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