Brake lights don't work except window
Asked by itsmenotu2 Aug 29, 2013 at 03:15 PM about the 1998 Mercury Grand Marquis
Question type: Maintenance & Repair
Changed switch on firewall still same please help thanks
1 Answer
Fordtudor37 answered 11 years ago
Check all bulbs and check for electrical power at the other two locations with the "brake pedal depressed". Black spots, or black interior of a bulb is the quick "give away" it is bad.