Used Susquehanna Motorsports Anti-Flicker Harness for LED Headlights. Plug and Play in a JK and others. No cutting into stock wiring, sends max power directly to lights from batteries. Only pulled as I've already got too much under my hood with dual batteries, supercharger, etc.
https://ok4wd.com/led-anti-flicker-harnessRuns $100+. Will take $40. Pickup in the Smyrna, Buckhead, Dunwoody area or free delivery to GATRFest.