GM A/C Compressor Harness w/Diode Email 2- Wire GM A/C Compressor Clutch Connector with Diode Part #: 2804 Part #: 2804 Quantity Price ea. 1 + $21.79 4 + $18.52 15 + $15.25 Sale Price! 18.52 Back to: GM Engine Connectors Ask a question about this product Coolant Sensor Connector GM 1983 and Newer Coolant/MAT Sensor Connector GM 1990 and Newer Description 2- Wire GM A-C Compressor Clutch Connector with Diode. 1983 and Newer. Diode is Wrapped. Replaces GM #12101907 and AC-Delco #PT179.