I'm finishing up my '83 Suburban 6.5 swap and am working on the A/C. My A/C never worked since I've owned the rig so unfortunately I don't have a starting point.

I made new A/C lines to work with the new, passenger side pancake pump on the 6.5 engine. I tested for leaks and vacuumed over night. When I was getting ready to charge it I realized the compressor would not engage. I tried jumping the pressure switch on the accumulator and nothing. No power to the pressure switch and no power to the compressor clutch.

I checked the manuals I have saved on my computer and could not find a diagram(maybe I missed it though.) Does anyone have an AC electrical diagram or have any ideas what my problem might be?

Thanks!