So i have a dash with an altered light. Well i bought it that way. Anyways i have the problem were when i turn on my light the gauge lights wont turn on. My guest is that is a grounding issue but where would i check that. If anyone can provide a how to or any steps to check possible reasons why it wont turn on. I know its not the lightbulbs because sometimes they turn on for 15 minutes and then turn off.