This auction is for the AC compressor switch for a 65-66 Impala and 64-67 Chevelle and 68 ALL Chevrolets. This switch is for the standard AC system and NOT the Auto-Temp style. This switch attaches to the inside heater box and is opened or closed as the Air cable is moved. We have bench tested it and it is in good working order. We also included the connector and a short section of wire. It will fit other GM cars with standard AC.