A/C circuit help

[Blue88Comanche]

About a month ago I replaced the a/c compressor and it worked great... Well now the electrical part of the ac system is not working.. I tested the electromagnet on the compressor and it still works.

 

I want to test the relay but I don't know where it is.

 

Thanks,

[JeffN]

First off you need to put a set of gauges on it to make sure you didn't lose your freon.

If the charge gets low the switch won't allow it to turn on.

[Blue88Comanche]

I put 2 cans in yesterday, I guess there could be a leak.

[gl1200aman]

there is a relay for the a/c on the right inner fender. it should be the last one to the rear. Is there a chance that the vacuum connector for the heat/a/c control in the dash came loose? if it did, it may not be telling it to turn on.