Vintage looks, retro styling, simple and cheap. 12V system with three wires for running light and brake light functionality. Placed into the fiberglass tail singly… the 2” lens has a 1” housing that you can drill through a fiberglass tail and easily mount. It doesn’t get much easier…you’re welcome. These are about as small as we have seen for a fully functional flush-mount running/tail/brake light. If that’s the look you’re going for, get it here. When installing these, the three wires are: Black = Ground, Red = Constant, Black/White = Brake Shipping to Canada requires $10.95 USD for postage, all other international locations will be $16.95 USD.