I have a 1996 S15 Jimmy. I installed a new compressor and accumulator along with a new high pressure switch. The compressor clutch won't pull in. If I apply 12 vdc to the clutch it pulls in and cools. It's all charged and works good. I checked power to the low pressure switch and the voltage comes and goes with the dash controls switched on and off. The low pressure switch has continuity but no voltage to the clutch. There is a new high pressure switch with continuity. I have purchased two manuals with wiring diagrams but neither have anything about the climate control wiring. Where can I find the wiring between the low pressure switch and the compressor clutch?