In my 83 burb, I have the old huge AC compressor (harrison?). I bought it from the PO, he said it needs a belt. (which means, the compressor isnt working usually!) So I hook up a belt. There seems to still be some pressure within the system. I see the clutch kinda free wheeling,even without the AC being active. So then I jump the connector on the condenser switch. (now that I think about it, I jumped the condenser, not the switch! lol) but it seems the clutch is producing heat. I think I need to replace the clutch. Any ideas on where I can still get parts for that unit? or should I just get a whole new unit?