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03 FORD F150 HERITAGE EDITION
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i have a 03 ford f150 heritage edition,
I found out a few weeks ago that my 7 pin trailer harness isnt working, i have a aftermarket back up light hooked up to my reverse light in the harness and that works after i replaced my ground wire, but my turn signals and brake lights dont work... ive switched fuses and replaced my ground what could i be looking at getting into or is there something i possibly overlooked?
 

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Somewhere underneath near the back on the drivers side, there should be a connector from where the power to the lights comes from the fron. Start at that connector and check for power with a meter, you'll need someone operate the brakes or lay something heavy on the brake pedal.
 
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