My 240 is nearly ready to go into service. Just need to get these new tires mounted on these 14" 740 alloys I bought on eBay AND this wiring issue. I have 2 green wires at the firewall that look like they have been ripped apart and three wires at the radiator support in the same condition and all green, maybe they got caught in the belts one day? I traced the 3 at the rad support and see that they go to the A/C dryer pressure switch. Two are connected to the same terminal and the other, on the other side of the switch. I also notice that the compressor has no wire going to it. So I figure that one of the wires at the firewall should have voltage with the A/C on and that one should connect to the single wire at the pressure switch. The two wires at the other side of the switch should be for the compressor and for a signal to the computer to idle up, which would be the final wire in question at the firewall. Can anyone confirm what I am thinking? Thank you. I'm only working with a Haynes at the moment, unfortunately. With any luck, the A/C will work after I get the wiring sorted, if not I'll convert it to R134 next summer.
Charles