Jed- you could check to make sure it isnt the coil pulling the clutch in, by running a wire straight from the battery to the positive side of the clutch. If the clutch pulls in, your clutch is fine. If it doesnt, you'll probably have to replace the compressor. If it did pull in, make sure the fuse is fine first, then check for a possible break from the compressor to the firewall, and give all plugs a good clean. If theres still no go, then there has to be a break behind the dash somewhere. Using a multimeter and wiring diagram would be a huge help