Brake Controller Install on 2021 Jeep Wrangler Unlimited
Question:
2021 Jeep Wrangler Unlimited I just installed the MOPAR 7 pin wiring harness. It left the blue wire disconnected in the engine bay. I want to purchase a Tekonsha P3. I have the Tekonsha wiring adapter for the Jeep that plugs in. Do I need to splice my blue wire from under the hood to the blue wire in this Tekonsha wiring harness?
asked by: Jeffrey M
Helpful Expert Reply:
That is correct. If your 2021 Wrangler Unlimited has the connector located under the dash to the left of the steering column near the top of the e-brake pedal as shown in the provided photo, you'd use the # 3073-P harness to connect the # 90195 Tekonsha P3 to the connector under the dash. You'd want to sever the blue wire exiting the rear of the controller and connect it to the blue output circuit you ran from the MOPAR 7-way you installed.
This assumes that the connector under the dash is present. You might need to install fuses or relays to activate the 12-volt power feed to the brake controller. The 30A fuse is in location F36 or F37, the owner's manual wasn't really clear on which.
If you don't have the connector under the dash, you won't need the # 3073-P harness. You'll instead need # 5506 install kit, and you'll need to use the pigtail included with the controller to manually run the 12-volt power to the brake controller, ground the controller to the negative battery terminal, make the stop lamp switch connection and run the 12-volt feed to the 7-way from the battery. The install kit includes the necessary wire, hardware and circuit breakers needed to complete the installation. The video I'll link for you shows these connections.
(click to enlarge)
Products Referenced in This Question
Tekonsha Custom Wiring Adapter for Trailer Brake Controllers - Jeep
- Accessories and Parts
- Trailer Brake Controller
- Wiring Adapter
- Plugs into Brake Controller
- Tekonsha
more information >
Wiring Kit for 2, 4, 6, and 8 Brake Electric Trailer Brake Controllers
- Accessories and Parts
- Trailer Brake Controller
- Installation Kits
- etrailer
more information >
Product Page this Question was Asked From
Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Automatic Leveling
- Under-Dash Box
- Dash Mount
- Up to 4 Axles
- LCD Display
- Up to 360 Degrees
- Tekonsha
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: Brake Controller
- Shop: Trailer Wiring
- Shop: Trailer Hitch
- Shop: Dexter Predator DX2 Trailer Brake Controller w/ Custom Harness - 1 to 2 Axles - Proportional
- Shop: Vehicle Tow Bar Brake System
- Shop: EcoHitch Hidden Trailer Hitch Receiver - Custom Fit - Class III - 2"
- Shop: Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Video: A Closer Look at the Tekonsha Custom Wiring Adapter for Trailer Brake Controllers
- Shop: Tekonsha Custom Wiring Adapter for Trailer Brake Controllers - Jeep
- Search Results: 4 leaf spring
- Video: How to Set Up Your Tekonsha Prodigy P3 Trailer Brake Controller on a 2021 Jeep Grand Cherokee
- Shop: Curt TriFlex NEXT Trailer Brake Controller - 1 to 4 Axles - Proportional
- Shop: Curt Echo Under-Dash Bluetooth Brake Controller w/ Plug-In Harness - 1 to 4 Axles - Proportional
- Shop: Curt TriFlex NEXT Trailer Brake Controller w/ Custom Harness - 1 to 4 Axles - Proportional
- Shop: Suspension Enhancement
- Video: Set up: Curt TriFlex NEXT Trailer Brake Controller on a 2021 Jeep Cherokee
- Video: Set up: Tekonsha Prodigy P3 Trailer Brake Controller on a 2018 Jeep JL Wrangler Unlimited
- Shop: Vehicle Tow Bar Wiring
- Article: Brake Controller Installation: Starting from Scratch
- Shop: Base Plate for Tow Bar
- Search Results: 4 pin connector
- Search Results: custom fit vehicle wiring
- Q&A: List of Everything Needed to Flat Tow 2023 Jeep Wrangler
- Video: Mount: etrailer Invisible Base Plate Kit on a 2021 Jeep Wrangler Unlimited
- Video:
- Video: How to Install the Tekonsha Prodigy P3 Trailer Brake Controller on a 2022 Jeep Wagoneer
- Q&A: How Much Space Should I Have Between the SumoSprings and Axle on a 2012-2023 Jeep Wrangler?
- Q&A: Pro and Cons of Air Bags Versus a Weight Distribution System for a 2018 Jeep JL Wrangler
- Search Results: brake controller
- Q&A: Can I Mount the Demco G-Force Controller Upside but Still Facing the Rear?
on Trailer Brake Controller
