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1978 With Rear “Dome Lights” Stuck On…. And Responses

Bill,
I just got a Lincoln in very good condition. Recently the circular rear ‘dome’ lights are on and I cannot turn them off. I can turn the under dash lights off and on with the light switch but the rears stay on. Can you give me some help on these?
Jim
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Hi Jim –
Did you purchase the car with these rear lights stuck on? Have you checked in the rear seating areas for separate left and right passenger on/off switches for each rear light? Is your car the smaller Continental or the full size Town Car four door sedan or coupe? Do you have the original owners manual? If you need one, we may have one available.
Sincerely,
Bill
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Bill –
Thanks for the response. It is the full size Sedan (233 inches according to the manual). It also has the 460 cu in although that is irrelevant in regard to the light problem but a fun fact! They both went off when I purchased the car about a month ago. Now only the right rear stays on (and drains the battery). I do have the original owners manual. There are separate switches that I can find.
Jim
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Jim –
I assume that you have checked both of the manually operated separate switches that you have found to assure that they are both in fact switched to the off position. Your owners manual should explain the complicated courtesy light operation. If the light remains on, you will need to remove the door jamb plunger switch in the affected side and unplug the wires to see if that light then turns off. If the light goes off with that plunger switch unplugged, that switch may be faulty. If not, you can try unplugging the manual switch for that light to see if it is faulty and not turning off. If you still have no luck you will need the courtesy lights wiring diagram to understand how the system works and the possibilities that could keep the lights on. At Lincoln Land we find sometimes that previous owners have somehow made wiring changes which have caused unintended consequences. The courtesy light wiring for the late seventies Lincolns and beyond can be somewhat complicated. That is why a wiring diagram is necessary for correct and easier diagnosis.
Bill

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