A/c compression clutch

[Mario12345]

So I know there are multiple post on this but the reason I’m creating one is because I haven’t found one that has helped me.

So I’m messing around with my ac system and I replaced everything besides the relays and the high low pressure switch.

I finally got my ac to blow cold but my compressor won’t engage unless I put 12 volts directly to it.

I tried bypassing the high/ low pressure switch and got nothing ...

I tried checking the female end of the compressor power switch and received no power...

I’m not sure what else to look for I’m about to replace relays . But I’m not to certain on how to test them so it would be just a buy and replace and hope
It works...

Aside from that I’m not to into changing the high low pressure switch because with it jumped it still wasn’t receiving power and or turning it on .... I’m starting to think maybe I have a messed up wire ? Also I’m not to certain what this third plug is for picture below. I know one is for oil pressure and ones the ac compressor but I’m not certain what the other one is.
Also if anyone knows that these two relays are for under the dash and which one is which that would be a big help.

 

[flintknapper]

The harness that goes to your A/C compressor also has two leads that go to your oil pressure sending unit. There are three wires (one goes to your A/C clutch, the other two go the oil sending unit).