98 OBS truck, was a 4.3 V6. Now it's a 5.3 and I made my own a/c relocation using an R4 compressor. I plugged in all of the factory wiring and could never get it to enable the compressor. Checking the original pcm connections, I decided they weren't all there and decided to wire it up myself. Here's where I am now, all wired standalone.

Wire from the interior button to positive side of relay
Wire from stock switch on the accumulator providing ground to relay
Relay provides positive power to the compressor
That way, without either one the system is off.

Apparently that switch doesn't make it cycle, because it just stays on all the time. The switch is constantly providing a ground so it just stays on. If I unplug that switch, it does turn off. stays running at 22psi and never changes. Also doesn't get cold, lol.

What am I doing wrong?