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79 C3 - Power Window Relay / Circut Brkr

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Old Oct 23, 2023 | 10:37 AM
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Default 79 C3 - Power Window Relay / Circut Brkr

I have a 1979 C3 - Does this year have a power window realy? Or just a circut breaker? The catalog shows 68-78. Neither window works after replacing motor. Circut breaker shows low ohms has continuity. Any help appreaciated.
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Old Oct 24, 2023 | 08:06 PM
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Correction: WIndows work from console but not doors. I pulled CB from fuse panel an re-inserted. WOndering if the red wire under CB was effected when re-inserting CB?? Any experience appreciated. Also, looked for power window relay in assembly manual but could not find one. Is there one on a 79 C3?
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Old Oct 24, 2023 | 08:47 PM
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I thought the center console was for the windows, and the door switches were for the (power) door locks.

Take a look at the wiring diagrams here. Note that the 79 door lock position changed during that model year.

EDIT: Much better wiring diagrams are in this thread:
https://www.corvetteforum.com/forums...-in-color.html
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Old Oct 25, 2023 | 10:15 AM
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Bikespace, Thank you for the docs and links. You fixed my power door window problem - they are for door locks - my new problem. I will look for door lock relay etc. and trouble shoot. I bought the car to drive and only been fixing things so far. I will get there!
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Old Oct 25, 2023 | 11:45 AM
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Glad that helped!

No relays in the power switch circuit, either. You can get new lock actuators from Rock Auto. There is also a lubrication trick you can do. I'll add a link if I find it.

Or, windows down, T-tops off, don't need locks.
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