Ok I jumped 12v to the connector on the top of the compressor and it kicked on and got ice cold. Why isnt the compressor getting power? Is there a relay somewhere? Again its a 91 RS Camaro 305 Auto

 

When I pull the low pressure switch something shuts off but its not the compressor. When I plug it back in whatever that is turns back on but not the compressor.

 

Not sure what you are hearing turn off/on when you play with the Low Pressure Cut Out Switch
You have a shrader valve on the High Side Line coming to your Receiver/Drier from your Condensor
Pull the cap off and put a tire gauge on it
With the engine turned off, you should have about 60-80 PSI
If not, your A/C needs a re-charge and that is why your Compressor won't engage by itself
If you already knew that, and you have enough of a charge for your A/C to work normally, sorry to say I can't help with the wiring
Good luck

 

Yea I have guages and it has the proper charge. When I pull the plug from the switch on the compressor nothing hapens and when I pull the plug for the switch on the high side nothing happens either. Could they both be bad?

 

Ok when I jump all of the switches the compressor still doesnt come on. Im lost

 

I found the problem. It turns out to be the ground for the compressor.