Troubleshooting Trailer Light on Fender Not Functioning
Published 03/30/2020
Question:
I have a 2011 Wells Cargo MPT 461 with factory led lights all around. My issue is with my right taillights on the right fender and the back of trailer. The left side lights all work as they should but the right sides won’t function at all. My plug in taillight tester for my 2008 Ford Edge AWD indicates that things are working fine on the vehicle side but trailer will not function on right side at all. What could be a solution to this problem.
asked by: Tom C
Expert Reply:
Most likely there's a bad ground on the trailer lighting assembly that's not working or there's some corrosion on the pins of the 4-way which is preventing the circuit from functioning. Try cleaning the pins first with sandpaper and then go over the wiring looking for any obvious issues like cut/exposed wire and then make sure the assembly is grounding like it should.
I also attached a couple helpful articles on trailer wiring for you to check out as well.
Product Page this Question was Asked From
Optronics 12V RV Dome Light - Double - 12" Long x 4-1/4" Wide - White Housing
- RV Interior Lights
- Dome Light
- Bright White
- On/Off Switch
- Surface Mount
- Incandescent Light
- 12V
- White
- Optronics
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Search Results: dicor self leveling
- Shop: Dicor Self-Leveling Lap Sealant - 10.3oz - Dove
- Shop: Dicor 501LSW-1 Self-Leveling Lap Sealant - 10.3oz - White
- Shop: Dicor Ultra Self-Leveling Sealant - White - 10.3 Oz Tube
- Q&A: Does The Latch and Deadbolt Use The Same Key On the Global Link RV Entry Door Locking Latch Kit
- Search Results: karrier kr35
- Shop: Kenda Karrier KR53 ST205/75R15 Radial Trailer Tire with 15" Silver Mod Wheel - 5 on 4-1/2
- Shop: Hub Bearing Kit for Lippert, Dexter, and AL-KO Axles - 3,500 lb with #84 Spindle
- Shop: MaxxAir II RV and Trailer Roof Vent Cover w/ EZClip - White
- Shop: MaxxAir Standard Roof Vent Cover - 20" x 19" x 9-1/2" - Translucent White
- Video: Review of etrailer Trailer Bearings Races Seals Caps - Hub Bearing Kit 3500LB Axle - BK2-100
- Shop: Trailer Wiring
- Search Results: castle nut
- Q&A: Lug Nut Torque Rating for a 5-Lug Trailer Wheel
- Video: Firestone Ride-Rite Air Bags with Easy Mount Compressor Feature Breakdown
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Article: Trailer Wiring Diagrams
- Search Results: trailer hitch
- Shop: Trailer Hitch
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Search Results: trailer wiring
- Article: How to Measure for Trailer Hitch Drop
- Shop: Suspension Enhancement
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Search Results: trailer tires and wheels
- Video: How to Choose a Trailer Brake Controller
- Shop: Brake Controller
- Q&A: Installation Time for Blue Ox BX1128 Flat Tow Base Plate Kit for 2016 Jeep Grand Cherokee
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
on RV Interior Lights
