Air Con Clutch Cycle Switch-Cycling Switch: 77-80 GM R12 1/2"-20 thread

1/2"-20 thread

Colours other then black and red have been tougher to get

Its the Power Brake Booster manifold air pressure supply sensor

Does not require cutting or modifying the floor

Firebird Trans Am & Camaro & many other GM vehicles

Air Con Clutch Cycle Switch-Cycling Switch: 77-80 GM R12 1/2"-20 threadThis air conditioning clutch cycling switch is designed for use with R12 refrigerant. While it remains compatible with systems still operating on R12, most vehicles had transitioned to R134A refrigerant by this period. BUICK 1976 1997 CADILLAC 1982 1988 CHEVROLET 1978 2001 GMC 1978 2004 OLDSMOBILE 1976 1998 PONTIAC 1978 1998