Need diagram help

[Dan Skye]

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I have an intermittent rear defog/gate dome switch/3rd brake light
they all come and go at the same time
I would be really greatful if somone out there had diagrams and the abilty to tell me how to shoot this down ?color wires in the fender?
I assume bad ground since it's 3 ciricuts?
Do these systems drop to chassis ground or other?
maybe reground the whole thing ?
Tx in advance to any Einstein willing to lend a hand
D
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[Dan Skye]

Sorry about the huge font I have no frekin clue....
D

 

[LandCrusher'70]

Edit it so we can read it!

Hurts my eyes!

 

[Beowulf]

There is a ground by the rear hatch. Grab a TIS subscription, Nate's download scripts, and get the EWD for your truck. That will have the location and wire colors.

-B-

 

[Sully]

Not real good at reading electrical diagrams, but it appears that all three of those have a ground at the L kick panel. Also, two of three (defogger and dome) have a ground under the center console box. Good luck.

 

[scottm]

My money would be on a bad ground to the rear hatch. I had electrical weirdness in my truck that turned out to be that. The ground for the rear hatch runs to the jack stowage area, aft of the jack, then forward. I think it grounds under the center console. I'm not sure of the color, it may be different with your year. I pulled the interior trim off my rear hatch, pushed a new ground wire through the rubber tube into the headliner and down to the jack stowage area. There was an aftermarket ground there, I used it. Others have found loose connectors and fixed it that way.

https://forum.ih8mud.com/showthread.php?t=1979
https://forum.ih8mud.com/showthread.php?t=10195
https://forum.ih8mud.com/showthread.php?t=24378
https://forum.ih8mud.com/showthread.php?t=69528

Lots of other threads on this subject for the searching.