Can't figure out this harness

[Goulet264]

I have a 1981 C10 that my dad and I have been working on for a few months.
We just put the engine back in and we are on our way to starting it again.
But we are stuck on wiring and we can't find the right wiring harness diagram.
Does anyone here have a diagram or a schematic for the wiring in the engine bay?

Thank you.

 

[kkgp81]

Give this a gander as it may help. ITs an aftermarket harness but has some useful stuff in the drawings and they used a lot of the same factory colors.

https://static.summitracing.com/global/images/instructions/aww-510706.pdf

This one might be the better fit for the 81

https://api.americanautowire.com/shopify/instructions/2023/10/13/92970190%20510348%20IN%203.0.pdf

 

[Jgonick]

There isn't an 81 in the reference library, but 80 & 83 should be pretty much the same.

Link-1973-1991 wiring manuals