inside car loights remain ON
Mercury grand Marquis 2000.
Inside lights normally dim after entering or exiting car.
Now, they remain on. Even opening and closing all doors and trunk lid, they still stay on.
In view of this happening in the evening, I disconnected the POS on the battery for the night.
When I re-Installed cabling to battery the problem was solved.
Where is the problem?
No trouble lights, and or codes?