Re: a/c clutch not engaugin
I forgot the exact wiring for the clutch but this I know. You can pull one of the relays from the fuse panel under the hood and jump 12V to pin 3 if I remember correctly.
BEFORE YOU GET INTO THAT, ARE YOU SURE THE SYSTEM IS NOT OUT OF FREON????
There is a freon pressure sensor that will prevent the clutch solenoid from being energized IF the pressure is too low. If you do not have the background to start energizing solenoids with test wires, get a can of 'stuff" from Wally World and see what that does.
I put a can of oil into my system along with a can of freon. No gages, just guesses. It works, I think the oil helps keep the seals from leaking but heck, others who have refrigeration backgrounds might post better information. I was going to purchase a pump and gages but then I would need to also get a scale to weigh the amount of freon I install. Might still do that if my problems reoccur. If I do purchase this stuff, I can almost guarantee I will be tripping over it for the next ten years.
EDIT: I really have forgotten the wiring but before I would redo the jumping tests, I would definitly look at the circuit diagram. It could be that 12V is constantly provided to the clutch and uses the relay to return the low side of the clutch solenoid to ground. This would complete the electrical circuit allowing the the solenoid to actuate. IF THIS IS THE CASE, APPLYING 12V TO THE SOLENOID WILL GET YOU NOTHING!