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Bad ground somewhere for 4-way plug


91stranger

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Whats round on the sides and hi in the middle-OHIO
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2003
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Gets Mo Chicks
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4.2 straight six powered by gremlins, goblins and mudbloods.
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Automatic
2WD / 4WD
4WD
So I have a 1999 ranger sport 3.0 auto trans with a factory tow package. I've used it to tow my trailer numerous times and never had an issue with the lights. Well I've had my trailer loaded with scrap getting it ready to get some money for metal and I noticed my lights weren't working on the trailer. So I look at the plug and the male prong on the truck is broken, so I wired up a new plug in a hurry (on my way to work) and thought it was fixed. WRONG. good plug, used bulb grease to keep from corroding (Ohio weather) so its making a good connection with the trailer. I happen to work at an RV and camper service shop so we hooked up the Tow Doctor, it tells ya what's good and what's bad and where its bad. Its showing my truck plug has a bad ground somewhere. Haven't had a chance to crawl under and look so I just want to ask if anyone knows where the ground is grounded? I'd assume on the frame near the bumper. Can I fix this by splicing the ground wire and making a new ground on the frame? Just wondering. Any advice should be good advice for me because I have a trailer loaded with scrap and no lights and my truck lights can't be seen due to the scrap in trailer. Thanks!
 


alwaysFlOoReD

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I can't see why you couldn't splice a new ground onto the original [as long as there is continuity].
 

91stranger

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Whats round on the sides and hi in the middle-OHIO
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2003
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Gets Mo Chicks
Engine Size
4.2 straight six powered by gremlins, goblins and mudbloods.
Transmission
Automatic
2WD / 4WD
4WD
That's what I was thinking. I just haven't had a chance to get under there and see whats wrong. It's rusty underneath so its probably just rusted off or not getting a good connection. Trailer lights are new LED's and new wiring and plug as of april so that shouldn't be the issue. I just didn't know if the trailer ground splice would affect my truck tail lights since the lights are plugged into a trailer adapter (I think). Not sure if it was all hard wired since its a factory tow package.
 

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