Trailer Lighting

[Deep]

Good Morning,

I have recently replaced the plug on my trailer and my bronco that feeds trailer lighting. All the lights work with the exception of the running lights and I am unable to find a broken or damage wire that would explain this. I bought the new trailer wiring kit as I felt the old age of my trailer plugs could be the culprit, but this did not fix the problem. Any advice or suggestions to correct this issue with the trailer running lights not working. I have plugged into my wifes truck and all works just fine, so I know this problem is isolated to the bronco.

Thanks

 

[green streak]

Good Morning,

I have recently replaced the plug on my trailer and my bronco that feeds trailer lighting. All the lights work with the exception of the running lights and I am unable to find a broken or damage wire that would explain this. I bought the new trailer wiring kit as I felt the old age of my trailer plugs could be the culprit, but this did not fix the problem. Any advice or suggestions to correct this issue with the trailer running lights not working. I have plugged into my wifes truck and all works just fine, so I know this problem is isolated to the bronco.

Thanks

I have the exact same problem. brake lights and turn signals work, but at night time....no tail lamps on the trailer.

 

[miesk5]

YO Guys!

When you can, please include your Broncos pert info in your signature (Year, Engine/tranny, 4x4/locking hub type, etc.) for better replies.

Have to ck wiring for both...

Wiring Diagrams, Haynes for 87-89 Bronco & F series

Source: by equivalent (Beetlejuice) at SuperMotors.net http://www.supermotors.net/vehicles/registry/7497/31098

The far right diagram has the trailer stuff...

Trailer Harness Wiring Colors TSB 89-14-17 for 90 Bronco & F Series

Source: by Ford via Steve83 http://www.fourdoorbronco.com/board/showthread.php?t=5221&page=2

For 92-96; here is the Ground Wire location diagram @ rear frame

See #5 — Trailer Tow Ground Wire (Part of 14405)

& can you believe that these folks have solved so many Tr wir probs for my friends...??

Trailer Wiring Troubleshooting & FAQs

Source: by hitches4less.com http://www.hitches4less.com/troubleshooting-trailer-wiring.html

esp; Grounding Issues

Trailer Wiring Kit Installation Info, 4-wire flat plug, 92-96 Bronco

Source: by hitches4less.com http://www.trailerwiring.com/inst/40435.pdf

Trailer & Camper Wiring Diagrams for 92-96 Bronco & Trucks

Source: by Ford via Steve83 http://www.supermotors.net/registry/media/738260