Anthony, I assume you know what a York type ( piston ) compressor looks like and that one is not staring at you on the passenger side of the top front of the engine... therefore... you probably have your compressor where mine is... at the lower front of the engine on the Driver's side....

If you are actually using r12 freon and are low it might be smart to have your system checked for leaks before you add any.. given the high cost of the stuff.... This is dangerous stuff and could easily put out one or more eyes with a small mistake... I would farm this one out if I were you ... Greg