Hi Everyone! I am officially stumped. My A/C compressor stopped working. I checked the power wire going into the compressor and no power. I checked and even replaced the relay on the passenger side fender. I tested pin 87 on that connection and it is dead. I unwrapped the wires going from the relay and went all the way down to where they go into the firewall, and I am assuming the cabin, looking for one of those famous "hidden" in-line fuses. I didn't find anything. I checked the fuses inside. They are all good. This feels like a blown fuse to me but I have no clue where else to look. Any help or advice would be greatly appreciated! Car is a 1989 XJ-S V-12 LHD Collection Rouge

 

There should be an inline fuse in the live feed between the starter relay and A/C relay but pin 87 is not otherwise fused. The power originates at the firewall post in case you need to bypass problem.
The pressure switch is on the ground side of relay so shouldn't effect pin 87 power.

 

I don't see any in line fuse at all on this green and white wire. Unless it is on the inside of the fender.

 

main feed to 87 should be brown/slate not green/

white, the fuse on mine just loops out of the harness and back in.

 

 

Yours appears to be wired differently than mine. The brown wire is on pin 30, not 87. This was the case for both of my cars. However, I checked the fuse on the brown wire for pin 30 and the fuse was good. It did have some corrosion on the contacts inside the fuse holder. I wire brushed the contacts, put a new 10 amp fuse back in, and presto! Compressor is now working again! Thanks for all of your help!

 

Do you still have refrigerant in the system?