MICTUNING MIC-B1002 LED Light Bar Wiring Harness, Fuse 40A wwwon››Accent & Off Road Lighting›Light BarsMICTUNING Wiring Harness for off road led lights is a perfect accessory for off road vehicles, working vehicles and any automobile that could use a relay to power specific equipment. Amazon: Nilight LED Light Bar Wiring Harness Kit 12V wwwon››Lighting & Electrical›LightingNilight LED Light Bar Wiring Harness Kit 12V On Off Switch Power Relay Blade Fuse for Off Road Lights LED Work Light,2 years Warranty Best LED Light Bar Reviews & Ratings For 2016 LED Light Bars for Trucks. A truck LED light bar is an important accessory whether you use your truck for pleasure, work or both. A light bar mounted across the cab is perfect for illuminating any road on dark nights or lighting up a construction site past sunset. Mount one on the tailgate for a super bright backup light.