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1979 Courtesy light timer not working

Old 06-07-2014, 07:08 PM
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AB_in_AUS
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Default 1979 Courtesy light timer not working

my courtesy lights do not go off after the 30 seconds. I has thought the timer delay module was shot and replaced the board with a new one from Corvette Central.

If I remove the module the lights go out when the doors are closed, go on when the headlight switch is turned fully to the left etc etc

Any thoughts?
Old 06-07-2014, 07:27 PM
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AB_in_AUS
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as a FYI, I had stripped everything out of the interior of the car and have just put everything back in.
Old 06-07-2014, 09:44 PM
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All I can say is what I had with my 78.
The module was bad and my lights stayed on all the time.
I pulled the fuse - thus no interior lights.
Then, I took the 2 white wires that went to the module - they have their own plugs - I unplugged them and plugged them into each other.
Now my interior lights work just as if there was no module - come on when the doors open, and go off when closed.
Old 06-07-2014, 09:54 PM
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without the module my lights come on when the doors open, and go off when closed. I haven't changed anything with the white wires so would that imply they are shorting on there own?
Old 06-07-2014, 11:40 PM
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Do the white wires go to the modules harness, or did someone else connect them together perhaps.
If they go to the harness, I don't know.
Maybe someone else knows.


As a side note, 98% of the time I don't want my lights delayed - and when I do I can leave the door open a little or turn them on with the switch. And when I left the car, why would I want them on?
Maybe just me but I like it much better not delayed.
Old 06-08-2014, 12:20 AM
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The white wires go to the modules harness, I had another look at the plug that goes onto the timer and the five wires (labelled on the connectors as ABCDE), the three wire element (CDE) looks fine but I have some scorching on the two wire (AB) .. any idea what would happen if the two wires (white & blk) are crossed in the plug or one of then is not connecting to the Timer board?

RE timer, I just like things to work like they are supposed to
Old 06-08-2014, 12:23 AM
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Here is the schematic on the timer... If you purchased a board.. I made it..

Old 06-08-2014, 12:39 AM
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It has your name on it would you have any idea on how the courtesy lights would behave if the module is not getting bower? When I turn the ignition switch on the lamps stay on so I was thinking maybe a problem with the module power or module ground.

Thoughts?
Old 06-08-2014, 12:49 AM
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sorry power ..
Old 06-08-2014, 08:40 AM
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Looks to me if the lights are working now as you say - the module is not getting power - the white wires are crossed in a way to bypassed the module.
Old 06-08-2014, 11:55 PM
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The module connector plug has five wires (A- WHT, B-BLK, C-ORN, D-WHT, E-PNK/BLK)

does anyone know what wires should be 12v when the module is disconnected, light switch not in "click position" and doors open? I only get 12V on the orange wire

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