Does Trailer Wiring for 2018 Jeep Wrangler JL Unlimited Have to Run to Battery Post
Question:
Can I use the power to the 12 DC outlet in the read compartment as a power source for this application.
asked by: Mike S
Expert Reply:
Not all vehicles can handle the additional amperage draw of the trailer taillights on the vehicle taillight circuits. Those vehicles need setup that draws power from the battery. Some vehicles have higher rated circuits that can handle this, and others need to have the power drawn straight from the battery to protect the taillight circuits.
For your 2018 Jeep Wrangler Unlimited JL you need to install a harness that draws power from the battery to protect the taillight circuits. For that you would need the part # 118786 like you referenced. If you were to run the power wire to a power outlet on the vehicle you'd void the warranty and also bypass the circuit protection of the harness which potentially would cause damage to the vehicle in the event of a short. I also attached a help article on running the power wire for you to check out as well.
Product Page this Question was Asked From
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Powered Converter
- Custom Fit
- 4 Flat
- Tekonsha
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: How to Choose the Right Trailer Hitch Class
- Article: Trailer Wiring Diagrams
- Article: Best Bike Racks for Electric Bikes
- Q&A: Replacement Lift Motor for Fantastic Vent in 2002 Teton 5th-Wheel Trailer
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: Calculating Portable Generator Power Needs
- Q&A: Replacement Clearance Lights Needed for GLO-BRITE 122R and 122Y Lights
- Q&A: Does Installing A Wiring Harness On A 2021 Jeep Wrangler JL Require A Wire Run To The Battery?
- Q&A: Are The Side Bumper Brackets Removed Permanently When Installing Blue Ox Base Plate BX1139?
- Q&A: Parts Needed to Add 7 Way Trailer Connector to 2020 Jeep Wrangler without Towing Package
- Article: What is Boondocking
- Q&A: Replacement Hubs for a Hudson Bros. Trailer with 5-Spoke Utility Hubs
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector