bikernut Posted May 3, 2025 Posted May 3, 2025 adding a headache rack with strobes & work lights to my 2016 Silverado 2500hd WT. I have gotten a upfitter switch panel and the added wires for it. Now it says these added wires are for grounding the item I want to add so where do I ground these to when adding the lite(s). Where does the switch get its power from and how to I wire the added items? I found something about a relay under the hood in electrical panel don't understand this so can someone give me precise wiring directions as I don't want to burn down my vehicle?? thanks all
DJG Posted May 8, 2025 Posted May 8, 2025 It seems that you might be in a little over your head. The best would be to use a relay for each light or set of lights. Use the grounding switch to ground and operate the relay. Supply the power to the relay from the accessory wiring. The relay will provide the power for the lights. Get that power directly from the battery with a suitable fuse. If you don’t understand how to use relays it would be best to go onto a forum that will give you the lessons or have someone knowledgeable to do it for you. It can be a little confusing at first.
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