BA15S 1156 12 Volt 60 SMD 5730 Single Filament Reduced Profile. Operates both positive ground or negative ground. The base is 15mm diameter. The base has two even bayonets. The base has a single contact on the bottom. Up to 900 Lumen output. Long life up to 30,000 hours. Comparable to 25 to 35 Watt incandescent bulb. Available in White 6000K, Warm White 3000K, Red and Yellow/Amber. Maximum overall length is 1.694". The maximum diameter is 1.058". Uses about 500mA at 12 Volts.