Ford 83-94 6.9 and 7.3L General Discussion of 83-94 6.9 and 7.3 Liter Ford Diesels

wireing nightmares

  #1  
Old 06-13-2010, 09:24 AM
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Default wireing nightmares

drivers side tail light goes out when tail light is on and brake is applied.Turn signal brake and parking light goes out when parking lights are on and brake is applied.dont know where to start.
 
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Old 06-13-2010, 12:03 PM
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I think I would check your grounds sounds like poss. feedback through other power circuit
 
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Old 06-14-2010, 09:14 PM
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What year is your truck, does it have the twist in or plug in stlye bulbs?
 
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Old 06-14-2010, 09:22 PM
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85 will have twist in.
 
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Old 06-14-2010, 09:35 PM
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After you check your grounds,if they look good replace the headlight switch. I know it sounds irrelevant but it fixed mine on all my trucks
 
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Old 03-25-2017, 02:01 AM
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SAME ISSUE REPLACED HEAD LIGHT SWITCH AND NOTHING TOTAL NIGHT MARE I GETTING A SHORT TESTER NEXT TWO 5 AMP FUSE HAVE NO POWER TO THEM IN THE UNDER HOOD FUSE BOX STILL TRYING TO FIND OUT WHY 1992 IDI
 
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Old 03-25-2017, 02:04 AM
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BEEN TOLD THE STEEERIN COLUM IS PRONE FOR HAVING A WIRE BREAK THERE WILL TEAR THAT APART TOO HAVE NO BRAKE LIGHTS NO HAZARDS BUT HAVE REVERSE NO RUNNING THOUGH
 
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Old 10-28-2020, 02:23 PM
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Check the ignition switch might not be fully engaging.
 

Last edited by 01trailerpuller; 10-28-2020 at 02:26 PM.
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