Posted By: mantonas
Trying to restore A/C - help! - 09/08/13 06:30 PM
Okay, among a lot of other things I'm trying to do on my 69 300, I would like to be able to turn on the A/C. My compressor is seized up, and before I got the car, somehow the wire connection for the clutch was removed. What I need help with is finding out which wire under the hood to connect to the A/C compressor when I put one in that works and has an actual connection to plug it in to.
I found one that looks like a candidate. It looks black but it may actually just be a very dark blueish green. It's got a female blade connector end on it, and it attaches to a bullet connector near the firewall behind the passenger side valve cover. See the attached pictures.
I put a battery in the car and pushed both the A/C and MAX A/C buttons and checked for a voltage in this wire, and there was nothing, but it may be because my fan resistor is unplugged. When I got the car, the resistor was broken in half and the plug was melted. After 11 years, I have a replacement but haven't got around to putting it in yet, because when it was running, even without a fan, the heater core radiated so much heat into the car and combined with my laziness that resulted in me never fixing the fan. So if there is some kind of interlock with the fan that doesn't let the A/C clutch engage unless the fan is turned on, that could be the reason.
Any insight into this issue would be appreciated.
I found one that looks like a candidate. It looks black but it may actually just be a very dark blueish green. It's got a female blade connector end on it, and it attaches to a bullet connector near the firewall behind the passenger side valve cover. See the attached pictures.
I put a battery in the car and pushed both the A/C and MAX A/C buttons and checked for a voltage in this wire, and there was nothing, but it may be because my fan resistor is unplugged. When I got the car, the resistor was broken in half and the plug was melted. After 11 years, I have a replacement but haven't got around to putting it in yet, because when it was running, even without a fan, the heater core radiated so much heat into the car and combined with my laziness that resulted in me never fixing the fan. So if there is some kind of interlock with the fan that doesn't let the A/C clutch engage unless the fan is turned on, that could be the reason.
Any insight into this issue would be appreciated.