Specially Customized design for Dual Color Light Bar, can Switch Light Different Modes.1. Universal LED Wiring Harness Kit: Two Leads, one line group can control 2 lights.2. Each light bar wiring harness have 3 power lines, it can switch between different modes. this is a new function that other traditional wiring harness doesnt have.3.With relay and high current fuse, it is safe and secure.4.Push button switch (with tape) can be installed in any part, which is simple and convenient.5.Connect the battery directly to ensure that the original vehicle power line is not damaged.Note: Please pay attention to the operating circumstances. Keep led light bar wiring harness away from any moist or heat, such as rain, moisture environment, electro-heat equipment (engine and etc).