No power to A/C compressor

[luminous05]

I have a 1985 c10 with an ac system I just fully replaced, had a vacuum pulled yesterday and was planning on charging today, I found out when charging, my compressor is not activating. Only to find out, the compressor wires are transferring no power, I followed all the wires to the accumulator and everything seemed fine, but no power whatsoever. The two 25 amp fuses are in good condition, anything helps.

 

[gmbellew]

The compressor won't start cycling until it gets some refrigerant in to close the low pressure switch. Check for 12v on the harness going to the low pressure cutoff switch. If you have power there, start charging. It might take a can or so before the pressure gets high enough to close the switch and let power through to the compressor. It will quick cycle at first. As you get more refrigerant in, the on cycles will be longer.

 

[fast 99]

Can jump the circuit for testing with a paper clip but usually not necessary for recharge.

 

[luminous05]

The compressor won't start cycling until it gets some refrigerant in to close the low pressure switch. Check for 12v on the harness going to the low pressure cutoff switch. If you have power there, start charging. It might take a can or so before the pressure gets high enough to close the switch and let power through to the compressor. It will quick cycle at first. As you get more refrigerant in, the on cycles will be longer.

We have checked. And there seems to be no po

The compressor won't start cycling until it gets some refrigerant in to close the low pressure switch. Check for 12v on the harness going to the low pressure cutoff switch. If you have power there, start charging. It might take a can or so before the pressure gets high enough to close the switch and let power through to the compressor. It will quick cycle at first. As you get more refrigerant in, the on cycles will be longer.

that was it exactly. I’m not too knowledgeable on ac systems but that got it running perfectly, thank you so much.