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#1
01-08-2026, 08:33 PM
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1974 Grand Prix power window relay location
I just bought a one owner 53,000 mile 1974 Grand Prix. The power windows don’t work.. I took a 12volt power source at the master switch and can roll them up and down. No power coming to the switch. I have not been able to locate it. Can anyone help me with this?
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#2
01-10-2026, 07:42 PM
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I think I have found the problem. I located the power window relay and I can jump power to the windows from there and make them work. The way the relay works is when the ignition is turned on, it sends 12 volts to the relay and passes the power to the window switch. I have found that when the ignition is on , no switched 12 volts is going to the relay so the relay is probably good. I found a connector hanging loose under the steering column but I can’t find where it plugs in due to the AC ductwork. I will remove it next time and maybe it is the connector being unplugged causing the problem
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