fixing a/c on a 1997 cavalier

[GasSavers_BEEF]

I know this won't help my FE but it is something I have been meaning to do for a while. I didn't have the money to take it to a shop (actually, didn't care that much)

my system is completely empty. I had a lose nut that was letting all of the r-134 out of the system. when I say lose, I could spin it with my finger. that has been fixed but the compressor won't come on to accept more. the wal-mart a/c fix it kit doesn't do the job.

here is my question. I have heard that there is a pressure switch on the high pressure side that has to be closed in order to get the compressor to come on. in most applications you can short this out with a paper clip or something (at least that is what I have been told) after removing my harness from my switch, I have 3 wires (not two).

am I looking at the wrong switch? if anyone knows where to get wiring diagrams for free, I am game for that too. all the ones I found have to be paid for.

any help would be appreciated.


Side note: this will actually help my overall "FAMILY" mpg as we take the element a lot of times because of the a/c issue. the element has gotten as good as 26 mpg but that still is nowhere near what the cav is getting me.

thanks