when i turn on headlight switch it causes instrument cluster lights to flash. on 1995 Mercedes-Benz C280

also makes digital clock goe to 1:00,then gauges (fuel,temp.,rpm,and speedometer)wont work,then after a while they work.But every time light switch is turned on it happens.I replaced light switch, and installed a used cluster w/new bulbs, same problem?Its driving me bananas,please can anyone help me.everytime i fix something, something else goes wrong.have had car 3yrs,never ending project.I thought mercedes were great cars,should have bought a freeking chevy!

by in Glendale, CA on July 11, 2012
1 answer 2 comments
ANSWER by on July 11, 2012
Find and repair loose dash ground circuit. And you are right about the Chevy.
COMMENT by on July 12, 2012
are the cluster and light switch grounded behind cluster?
COMMENT by on July 12, 2012
Well since i am a night owl i'll explain. I had the same thing on a chevy S10 and the dash ground wire for the dash was loose.After finding a schematic diagram and locating this wire, tightened it and problem solved. Key SCHEMATIC DIAGRAM! Wish i could tell you where to look but i don't know where the ground is. Good luck. Ps the chevy was doing exactly the same thing. So i figure if it worked on it it should work for you. The ground circuit is the most overlooked item for a problem.