LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Pontiac >> 1972 >> GTO 6.6L Eng VIN S, Automatic Trans >> Repair and Diagnosis (Single Page) >> Body & Frame >> Windows >> Electric Window Controls >> Testing >> Power Window Circuits >> Master Control Switch
October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Master Control Switch

Check power feed RED-WHITE wire at switch, if power fails, test wire between relay and master switch.

NOTE: If power fails at master switch on Cadillac models, check blockout switch.

With power available, by-pass switch using a jumper wire between feed terminal and one of the motor lead terminals. Test each motor terminal, if each circuit operates properly, check switch connections or replace switch.