I had the dealer install the switch that came with the light bar lights directly across from the one for the front brush guard light switch and I have run the HID headlights with High beam Halogen on and all 6 lights on at the same time with no problem. I used them recently in the California desert for over 3 hours with the enging running of course and no problem with the amp guage dropping below 14 volts.
Hope this helps
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