63 LED Bulb 12 to 14 Volt BA15S Base. Works positive ground or negative ground. Operates from 12 to 14 volts AC or DC. Long life up to 30,000 hours. Up to 12 CP or 240 Lumens. 120 degree viewing angle. Designed for old sockets that have fingers. Dimm-able with a variable AC or DC power supply such as your dashboard dimmer switch. Comparable to a 25 Watt incandescent bulb. Operates cool to the touch. Great for vintage and classic cars that have been modified from 6v or 8v to 12v. CE and Rohs. The shape is G6.3.0 MSCP. The filament design is compatible with C-6. This bulb is a true 63 compatible since the board is mounted inside the ba15s base. The overall length M.O.L. is .888 inches. The maximum bulb diameter is .590 inches. Available in White 6000K, Warm White 3000K, Red, Green, Blue and Yellow/Amber.