89GMCJOHN
I'm Awesome
So I am getting down to the finish line here on my 89 GMC shortbox build. I am now troubleshooting the ac system. When I turn on the ac the fan blows but the compressor clutch isnt engaging ...from what I gather you have a low freon pressure switch located on the dryer and a TOO high system pressure switch located somewhere else .
My questions are where is that too high freon pressure switch located on a 1989 ?
Is it located on the back of the compressors body ? I have a round hole with two terminals on it on the back of my compressor but I cannot locate the wiring harness connector that possibly connects to this. Can someone take a pic of their 89 compressor showing what the connector looks like going to the back of the compressor ? Or tell me where that high pressure switch is .
Where does the compressor pick up its circuit ground from ? From what I understand +12 goes through the low pressure switch then through the high pressure switch in series then to the green wire which is located on the left connector post when looking at it from the front of the truck on the compressors two post connections on top of the compressor ? Is that correct ?
What signal goes on the right post of the compressor connector -a permanent ground connection ?
Thanks in advance guys .....
My questions are where is that too high freon pressure switch located on a 1989 ?
Is it located on the back of the compressors body ? I have a round hole with two terminals on it on the back of my compressor but I cannot locate the wiring harness connector that possibly connects to this. Can someone take a pic of their 89 compressor showing what the connector looks like going to the back of the compressor ? Or tell me where that high pressure switch is .
Where does the compressor pick up its circuit ground from ? From what I understand +12 goes through the low pressure switch then through the high pressure switch in series then to the green wire which is located on the left connector post when looking at it from the front of the truck on the compressors two post connections on top of the compressor ? Is that correct ?
What signal goes on the right post of the compressor connector -a permanent ground connection ?
Thanks in advance guys .....