[roboticjunky]

I'm going to guess who you got the harness from.

So check these threads for info and see if they help you.

http://67-72chevytrucks.com/vboard/s...t=express+down

https://www.elcaminocentral.com/thre...h-video.61841/

https://www.elcaminocentral.com/thre...l-parts.60418/