96 Mustang Conv map lights in rear view mirror won’t turn off

Bretta10 said:

Could it be a bad door “plunger” switch?

Click to expand...

Does the door key minder and the head light reminder work?

Does this car have remote keyless entry?

The door key minder is what makes the "ding ding" alert when the key is left in the lock with the door open.

If the driver's door minder functions work then it seem more likely to focus on the passenger's door ajar switch.

But......since this car has remote keyless entry, that module could also be at fault.

The way the courtesy light system works on your model year car is it's necessary to check virtually every switch to confirm that it's is working as expected.

EDIT: if it's just the map reading lights that are stuck on and the rest of the lights work as expected THEN the problem has to be in the switch. Again the system is quite complicated with multiple bulbs in each socket. A set of wiring diagrams and a test light could be your friend here.

It would be helpful to know IF the BK and/or the GY wire has power. It will be necessary to remove both bulbs. Use a test light. There are two BK wires. One is a ground. It's the other BK wire to test.

IF interested in getting a full set of wiring diagrams for yourself I maybe able to help. Send PM.

Thank-you for the follow up post. I wish more people would update their threads with the steps taken to resolve their problem so that others can learn. Sometimes the journey is as important as the destination itself.