Applications: Off Road Lighting: 4x4, Car, ATV, UTV, SUV, Truck, Trailer, Forklift, Train, Boat, Bus, Outdoor lighting, etc. Other Lighting: Excavator, Dozer, Road Roller, Crane, Tractor, Harvester, Grain Drill, Snowplow, Fire engine, Rescue Vehicle, Mining Lighting, Construction Lighting, etc. Household Lighting: Garden, Backyard, Garage, Indoor Lighting. (Note: Use a voltage transformer/converter to convert the AC 110-120V to DC 12V for indoor use.)Note: They are aftermarket parts. NOT D. O. T. approved. Do not use if D. O. T. is required. For off road use only. Before installing this product, please check your state/provincial and local/municipal laws and regulations.