Question about 2004 Ford F150

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Back-up lights and trailer running lights

The back-up lights do not work when backing up. the trailer running lights are also dead. Brakes and flashers work fine in both situations.

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  • riccarman Aug 16, 2008

    Ford F 150 Truck lights work great. Trailer brake lights, turn lights work great but NO RUNNING LIGHTS on trailer.

  • Anonymous Jan 20, 2009

    I have the same problem I checked all the fuses in the fuse board and they appear to be OK. Is there a specific location other than the fuse panel that a in-line fuse or fusible link may be found. Do you have the factory fuse diagram If so could you send me a copy Paul.gallardo@americangypsum.com

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2 fuses to check, both in the cab on 04+ MY F150s

F102
F14
These are for the truck's reverse lamps. If the fuses are good, did you check the bulb socket with a meter, or replace the bulbs?

The trailer parking lamps use Fuse F10, and the trailer tow parking lamp relay. Might want to check both of those, and check both the 4 pin and 7 pin adapter, could be a corroded socket.

Posted on Feb 18, 2009

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My 2004 f150 has the factory tow package. It has a fuse for the trailer running lights seperate from the truck running light fuse.
Check, you may have the same set up...

Posted on Aug 27, 2008

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