A friend of mine has a 96 Suburb and he was having a problem with blowing a fuse every time he UNHOOKED form his urtility trailer.
The lights all worked fine UNTIL he would unhook. We found a short in the harness that is up under and in front of the rear bumper. There are a number of configurations on that harness. all the way from a 4 pin, 5 pin, 6 pin, 7 pin, 7 blade and one that will even allow you to plug in 7 blade and a 4 pin side by side.. Don't ask why, they just did it.
That is where his problem was. In the harness and the adapter sections.
I rewired it with a standard 7 hole and he then bought an adapter that pluges into that for his 4 wire utility trailer.
Now no problems
One bazillion fish
1991 34' 60th Aniversary Limited Edition #008
2007 Chevy 2500 HD Duramax/Allison
One big parade float & a 40' Wells Cargo 5th wheel trlr.
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