My speedometer, electric mirrors, and inside light all quit working. on 1997 Mercury Cougar

It all happened at oor about the same time. Also after having a passenger side door latch installed and a drivers side outside handle, the locks wont unlock unless you pull up on them. Even the key doesnt want to work on drivers side.

by in Hattiesburg, MS on December 29, 2011
1 answer
ANSWER by on May 28, 2015
Did anyone find a solution to this problem??