Trailer light on right side will not come on. lights are new, it has to be on the truck. How do you find the problem?

Asked by ncismpls Jan 04, 2015 at 12:22 PM about the 2004 Ford F-150 XL Ext. Cab 4WD

Question type: Maintenance & Repair

faulty hook-up on f150 trailer elec. 4 hole flat connectors.

201,085

dandyoun answered 9 years ago

all lights are out on that side of trailer? If so double check the ground connection at that light assembly. Both lights use the same brown wire for the running/parking lights to work so if one is working and the other is not then it's either a bulb or ground issue. Also did you connect the white wire coming out of the pig tail to the frame of the trailer? If no you need to its the ground connection from your battery for those lights.

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ncismpls answered 9 years ago

thanks for the quick answer

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201,085

dandyoun answered 9 years ago

Hope it helps.

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Tony answered 7 years ago

I have the same problem but everything is grounded and yet still no right lights i checked alll fuses and relays dont know where else to go please help

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faulty hook-up on f150 trailer elec. 4 hole flat connectors.

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Trailer light on right side will not come on. lights are new, it has to be on the truck. How do you find the problem?

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Trailer light on right side will not come on. lights are new, it has to be on the truck. How do you find the problem?

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