A/C Compressor Wiring

[rileydale01]

Just picked up a 1981 c10 and I’m trying to get the AC working. Whenever I move the controls on the unit inside the truck, I get nothing at all, so I’m assume blower motor. I checked all fuses and they are fine. I also have the issue with some of the under hood wiring. This truck was originally a 305 and had a 350 swapped into it and seems like the A/C was never plugged back up. I need help trying to find the A/C sub harness because everything I’m seeing online doesn’t look correct to me. Any help is appreciated!

 

[MarineOne]

if it's same as 77 I have a harness let me know

 

[consti2tion]

That distribution block needs 12v going to it. When you move the climate control to any of the AC settings it should energize a green wire going to the low pressure cut off switch on the accumulator. Just to test and see if you get 12v out of one of the green wires in your second picture you can put a jumper wire in the low pressure switch connector. Do not attempt to use your AC with that low pressure switch bypassed.