BAY15D 1154 12 Volt 60 SMD 5730 Dual Filament Reduced Profile. Operates 12 volt positive ground or negative ground. Up to 950 Lumen output for the brake light. Up to 750 Lumen output for the taillight. The base is 15mm diameter. The base has offset bayonets. The base has two contacts on the bottom. Available in White 6000K, Warm White 3000K, Red and Yellow/Amber. Maximum overall length is 1.694". The maximum diameter is 1.058". The bulb uses about 500mA at 12 volts.