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Why would trailer lights on Ford E-150 van stop working if brake lights and turn signals work OK Trailer wiring is fine and works with other vehicles?
Wiki User
∙ 13y ago
Check the condition of the trailer ball and the underside of the ball coupling; if they're rusty, you don't have a good ground. You could use a wire brush in a drill driver to polish these areas. Then spray with WD40.
Here's my two cents:
If you have a 7-wire connector, you have the ground wired in, so the above wouldn't make any difference. When I had the 4-wire connector and a dirty ball, I would have intermittent lights.
Looking in Owner's guide today for answer to fuse problem and noticed that there are several separate fuses for trailer wiring. That would be for a factory installed hitch/wiring. Mine's a 2006 fwiw.
Can't say if yours was cobbled together later.
Try this link to view the owner's guide:
http://www.motorcraftservice.com/vdirs/SPubs/default.asp?pageid=oghome&gutsid=spubs_serv_all_new&TYPE=OWNERGUIDE&menuIndex1=17
Wiki User
∙ 13y ago
Add your answer:
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