My 87 has factory air, but the compressor is seized. No belt when I got it. I'd like to get in there and remove the condenser coil and all the plumbing, but retain the electric pusher fan. Would it be possible to use the dash AC button to operate the pusher fan using existing wiring, or would I be better off installing a dash switch? Also, if I remove the evaporater coil, will my heater work better?