Which Fuse on 2014 Ford F150 Protects Trailer Running Lamp Circuits
Question:
what fuse or relay controls the tail lights on trailer. All other trailer lights work. There is NO power on truck side for tail light connector
asked by: William J
Expert Reply:
There is one 20A fuse and one relay in the engine compartment fuse block for the trailer running lamps. The relay is in location # 6, and the 20A fuse is in location # 67.
Try swapping an adjacent relay into the # 6 location, to see if that makes a difference. Then, check the fuse in # 67. If it's blown, replace it but before you plug a trailer back in, you'll need to find out why the fuse blew.
Examine the trailer connector on the truck, looking for green or white corrosion on the pins, clean or replace the connector as needed. Then trace the running lamp circuit on the trailer which is typically a brown wire. Follow it all the way back to the trailer lamps, looking for pinched or broken wires, loose connections or cracked or worn wire insulation. Look for anything that would allow the copper conductor to short out on the trailer frame. Once the short is located and repaired, you should be good to go.
I'll link you to some trailer wiring troubleshooting articles that you might find helpful.
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
- Converter
- Custom Fit
- 4 Flat
- Tekonsha
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Q&A: Trailer Running Light Fuse Location for 2014 Ford F-150
- Q&A: No Power to Trailer Connector on a 2014 Ford F-150
- Shop: Hook Probe Circuit Tester
- Video: Performance Tool Wiring - Tools for Wiring - PTW2993 Review
- Video: Performance Tool Hook Probe Circuit Tester Review
- Q&A: Troubleshooting Trailer Lights Not Working When Connected To 2013 Ford F-150
- Q&A: No Power To Running Light Pin On Vehicle Trailer Connector
- Q&A: Which Fuse For Trailer Running Lights On 2010 Ford F-150
- Shop: Curt 7-Way to RV Socket LED Circuit Tester - Vehicle End
- Shop: Rubber Window Edge Weather Strip for RVs - Press In - 20' Long x 3/4" Tall
- Shop: Optronics 12V LED RV Dome Light - Double - 10-5/16" Long x 4-3/16" Wide - White Housing
- Shop: Stromberg Carlson Exterior RV Ladder - Aluminum - 99-1/2" Tall - 250 lbs
- Video: Review of Steele Rubber RV Window Parts - Weatherstrip - SR63FR
- Video: Optronics LED RV Interior Light Review
- Video: Stromberg Carlson RV Exterior Ladder with Hinges Review
- Video: Review of CURT Electrical Tools - 7-Way LED Circuit Tester - C73NR
- Shop: RV Interior Lighting
- Video: Choosing the Right Trailer Wiring
- Search Results: trailer jack
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Shop: Trailer Wiring
- Article: Trailer Wiring Diagrams
- Shop: etrailer Electric Trailer Brakes - Self-Adjusting - 10" - Left/Right Hand Assemblies - 3.5K
- Q&A: Trailer Running Lights Do Not Work but Brake Lights and Turn Signals Do Work
- Shop: Hub Bearing Kit for Lippert, Dexter, and AL-KO Axles - 3,500 lb with #84 Spindle
- Article: Trailer Tire Sizing
- Search Results: trailer lights
- Shop: Trailer Hitch
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Search Results: brake controller