SMFire History Posted December 14, 2013 Author Share Posted December 14, 2013 Finally got a chance to troubleshoot this today. Was not getting 12v to the switch so I jumped a 12v lead to one side and it turned on the brake lights... continuity good. Next I ran a new wire from the brake light terminal at the fuse box to keep it simple. Worked like a charm and brake lights came on with the pedal. After closing the fuse box cover the lights did not work again. Found a loose connection with the 14A fuse. Brakes worked again. Replaced fuse, removed new wiring.... all works fine.Maoral of the story... even when the fuse looks good it may not be. I tested both sides of the fuse terminal and it seemed good but it intermittently lost connectivity. No hiccups since the new fuse. I'll be replacing the rest just to be sure.Thanks for your help!Dom 2 Quote Link to comment https://www.bigmacktrucks.com/topic/33751-brake-switch/page/2/#findComment-221310 Share on other sites More sharing options...
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