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I have a dead short in the courtesy light circut in our 79. Anyone else have this happen? I cannot seem to find out where it might be. Any ideas out there?
These are always fun (not).
Remove the bulb from the dome light, remove the dome light and inspect for broken pieces or loose wires. Have any interior panels been removed/replaced recently? It could be a screw through a wire or a pinched wire. There is also a timer for the courtesy light that keeps the light on for about 20 seconds after you close the doors, it may be bad.
Good luck!