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?

This issues was noticed a few weeks ago.