Chris Posted August 27, 2016 Report Share Posted August 27, 2016 The third brake light doesnt work on my 'new' 2007 DTS . The voltage at the CMHSL is approximately 14.5V when the ignition is on and the brakes are depressed. Is this the normal voltage? I just want to make rule out electrical issues before replacing the CMHSL. I also noticed during testing that the brake lights don't light up with the ignition off and brake pedal depressed. Is this normal? Thanks... photos of the new ride to come... Quote -Chris Link to comment Share on other sites More sharing options...
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