-original 1/2 x 14 N.P.T.F.-, Grand Prix, with factory gauges/Rally Gauges (correct resistance and connection,... see more-original 1/2 x 14 N.P.T.F.-, Grand Prix, with factory gauges/Rally Gauges (correct resistance and connection, produces accurate gauge display)
-O.E.M.-, connects to Air Conditioning Harness near rear of compressor, Grand Prix-O.E.M.-, connects to Air Conditioning Harness near rear of compressor, Grand Prix