My AC just stopped working. I replaced fuse and Wide Open Throttle relay. Still no go. Checked and added refrigerant, still no go, even though it cycled on and off for about ten times. Connected battery directly to compressor, it engaged and cooled the truck. Someone said the low pressure swith maybe faulty. Any ideas?? Can I bypass the switch and check it. Can I change switch and not evacuate system?? Any ideas would be appreciated.

Liltruck