'28 - '31 Ford Model A 12 Volt LED Upgrade Conversion Replacement Lens DUOLAMP Tail Light - Motorcycle Chopper Bobber Cafe Racer Simply plug it into your '28 - '31 Ford Model A DUOLAMP and you're good to go! Super bright LED tail lights can hold up to the vibrations that your bike can put out. Fully enclosed design is not only WATERPROOF, but it's guaranteed for life! Tail light, brake light and tag light built in. No modification required. FOR 12 Volt Systems ONLY