The headlights and timer work fine. The interior lights will not respond to the push switch located on headlight control.
What is your question?
I have looked into the lower hinge where the door switch is found. What’s the best testing method for isolating between the door switch or the dash switch. The side panel interior lights as well as the dome light are not turning off with manual switch or timer.
cid:C20668EC-0807-49ED-94D0-94A065086D8C
How long has your 2000 Mercury Grand Marquis had this problem?
RepairPal Certified shops can diagnose and repair your 2000 Mercury Grand Marquis. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Door ajar switch is located in the door LATCH assembly - - liberally spraying WD-40 into the door latches to clean the door ajar switch usually fixes this problem..
Spray - close / open door a few times - repeat if necessary.
