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Symptoms: The dash lights and other lights go out when the headlights come on.

Description of problem: The problem seems to start intermittently. When the headlights turn on the HVAC unit, System Information Display and the dash lights switch power sources to the voltage supplied by the dimmer unit. Normally the the HVAC and System info unit are powered by a 12v source until the lights are activated. The dimmer unit has a resistor that may be going bad.

Fix: I am working to fix this problem in my Mark. I will decribe the procedure when I get it fixed.


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