1990 gmc taillight wiring

[jelawrfarms7]

i have to rebuild my wiring harness to my taillights and am lost to how the flat 4 prong weather pack at the back of the truck is wired any help would be great

this is on a 1990 gmc sierra k3500 4x4 dually

 

[Burning oil]

Might be time for a test light. Probe each one with the brake pedal pushed. When you get the light you know what you got. Do the next for turn sigs.....ect

 

[jelawrfarms7]

hmm never thought of doing that nothing like sitting in a gravel drive in 10 degree weather

 

[jelawrfarms7]

hmm never thought of doing that nothing like sitting in a gravel drive in 10 degree weather

oh and i was just being funny here please dont take offense

 

[Burning oil]

If I had to sit on gravel in 10*s the job would just have to wait
No offence at all. Half the stuff I say here I wonder how its being taken.

 

[jelawrfarms7]

yeah i hear ya there but i need the truck ready incase it snows again and its my only vehicle

 

[handcannon]

hmm never thought of doing that nothing like sitting in a gravel drive in 10 degree weather

I understand where you're going with this. That being said, sometimes you end up in desperate situations and a pc of cardboard or your wifes' office desk carpet pad will do wonders. If you do sneak the carpet pad be careful in very cold weather as the plastic can become brittle and break.

Don

 

[GM Guy]

get a t-harness, as I bet you have to rebuild it due to the previous owner splicing in a trailer connection.