280zjb Posted November 21, 2016 Share Posted November 21, 2016 1978 280z: When I hit my brakes my side marker lights and dash backlight come on. I haven't had the car very long so not sure if it's always been like this but I just started noticing it. Any ideas? Quote Link to comment Share on other sites More sharing options...
Evlevo Posted November 21, 2016 Share Posted November 21, 2016 Does it light up but its kinda dim? Sounds like a bad common ground and its back feeding (grounding) through the marker light/dash light circuit. Quote Link to comment Share on other sites More sharing options...
ZHoob2004 Posted November 22, 2016 Share Posted November 22, 2016 Maybe not directly relevant, but on my 77 a previous owner had decided it was a good idea to jumper the front markers to the headlights. I'd take the bulbs out and check resistance to ground, and if they have any continuity to each other. That should help you track it down. Quote Link to comment Share on other sites More sharing options...
Exposed Posted November 29, 2016 Share Posted November 29, 2016 end up finding out what caused this for you? Quote Link to comment Share on other sites More sharing options...
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