I had a problem filling the ac system with freon after changeing the comp,expansion valve and dryer because the compressor would not engage. I removed one of the wires from the low pressure switch and connected it to a wire from the + battery terminal and the compressor engaged. I let it run long enough to fill with 3 cans. It ran cool after filling and i reattached the wire to the L pressure switch. The compresson did not engage after that. Could a bad fan temp switch cause that. I tried jumping the fan temp wires that go to the fanand they got hot so i quickly stopped. I jumped the fan itself at the plug in and it started. All fuses are ok. The blower works. Any ideas where to check to get the compressor to start functioning. RAY M