TD New Guy
Join Date: Aug 2018
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My 1987 GLHS
Having issues with instrument panel when using rheostat on headlamp switch. When the instrument panel lights are turned up all the gauges including the tach go to maximum setting and buzzing occurs. When using without the headlights on the turn signals will cause a slight bounce in the gauges also. Headlamp switch has been replaced, new turn signal switch was tested, all grounds have been tested and an additional ground wire was installed without solving any issues. The thought is that the ECM is the problem however since it is not returnable changing it would mean additional expense which still may not solve the issue.
Thoughts or experiences with this issue?
Last edited by wyghostown; 08-28-2018 at 12:08 PM.