1998 Ford F150 Trailer tail light plug in

1998 FORD F-150
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JNICHOLSON3024
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Electrical problem
1998 Ford F150 V8 Four Wheel Drive 165000 miles

I have a problem with a 7 prong factory installed tail light receiver for a trailer plug in. The poles for brake, left and right turn do not work. The other 4 poles do work. I've checked fuses and found a bad one but the rest seem to be OK. Could there be something else like a relay or someting that is bad?
May 14, 2010 at 10:11 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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