I have a 1993 Chevy Suburban K2500 5.7. I recently replaced some components and keep springing leaks in different spots, so i thought it was just the other components were old is why, until now I have replaced the whole ac system, and still leaking from various areas. I do not have a high pressure switch on the back of my compressor as i was told i didnt need one, but now I seem to think I really do. My question is, how would i wire it into my system, as i have no wiring harness in sight? Also, now i have a leak in my compressor where the switch would go, so if i replace o ring and put switch, will this fix that area? Thanks in advance for any input, as this issue has been driving me crazy, and i cannot find anyone here I Yuma to seem to know either.