I recently bought a 1983 300SD and the AC isn't working. The fan wasn't kicking in at all so I ran a wire from the battery to the fuse box to get power to the fan. The compressor clutch (i think that's what it is on the front with the 2 wires going to it) wasn't plugged in. The plastic around the wire was all chewed up and I can't tell which wire goes on which side.
If someone with a 300SD could let me know which color wire goes on what side I will love them forever.