Cadillac Repair: 1990 cadillac fleetwood, 1990 cadillac fleetwood, drl module

Question
The day time running light will not go off when the engine is turn off. I have to disconnect the battery. How can fix this?

Answer
The most likely cause is a faulty DRL MODULE which is located to the right of the steering column under the dash.

HOWEVER< You need to perform some simple test procedures to be SURE that the fault is not a wiring problem.

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