Bigdog Posted October 7, 2016 Share Posted October 7, 2016 (edited) Can anyone descibe wire color and path of power source from ignition switch to tail lights also original ground wire for tail lights they have have been modified and I can only turn off by disconnecting ground at tail lights i have installed led lights. Edited October 7, 2016 by Bigdog Quote Link to comment Share on other sites More sharing options...
Maineah Posted October 8, 2016 Share Posted October 8, 2016 All of the power for the rear lighting comes from the truck's wiring every coach maker had their own ideal how to do it from what was the truck's rear lighting. If the parking lights go out on the truck with the head light switch then your problem is in the coach wiring. LED's take very little power to make them light the slightest problem can cause your issue. Quote Link to comment Share on other sites More sharing options...
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