I REPLACED THE AC COMPRESSOR BECAUSE THE POWER PLUG HAD BROKEN OFF AND WAS NO LONGER ATTACHED TO THE COMPRESSOR BUT ONLY TO THE POWER WIRE OF THE HARNESS. I INSTALLED THE NEW COMPRESSOR,FILLED IT WIH A CAN OF PAG 150 COMPRESSOR OIL AND VACUMED OUT THE SYSTEM AND PUT IN A CAN AND A HALF OF FREON WHILE RUNNING THE UNIT ON MAX, AND THE COMPRESSOR STILL DIDNT KICK ON,I THEN CHECKED ALL THE FUSES UNDER THE DASH AS WELL AS THE ONES UNDER THE HOOD ALONG WITH ALL THE RELAYS ON THE FIREWALL AND THEY WERE ALL FINE.I THEN PUT A TEST LIGHT ON THE PLUG THAT POWERS THE EVAPORATOR AND GOT NO INDICATION LIGHT THAT THERE WAS POWER GETTING TO IT EITHER,I THEN PUT THE TEST LIGHT ON THE POWER PLUG FOR THE COMPRESSOR ITSELF AND THE SAME THING. I NEED TO KNOW WHAT OTHER PROBLEM IT MIGHT BE TO PREVENT THE UNIT FROM COMING ON,OH I ALSO REPLACED THE CONTROL HEAD INSIDE THE VEHICLE AS A FINAL INTERVENTION. PLEASE HELP ME.I'M LOST NOW.