The all new Vivid Lumen Canbus wiring harnesses are the perfect solution for a headlight upgrades on vehicles with finicky headlight systems. Say goodbye to "bulb out" warning lamps and flickering caused by "can-bus" systems. Each canbus headlight harness has a built-in resistor pack to mimic the characteristics of a standard halogen bulb being plugged in to your stock harness, tricking the car into thinking nothing has changed - effectively avoiding the side effects of lamp out systems such as warning lights, flickering, or pulsing.