1158 LED Bulb BA15D Base 12 Volt 2.6 Watt G18. Operates either positive ground or negative ground. Taillight up to 240 Lumens, Brake light up to 320 Lumens. Available in White 6000K, Warm White 3000K, Red, Yellow, Green and Blue. Dim-able with variable voltage supply. The base bayonets are even with two contacts. The base diameter is 15mm. The MOL is 1.47", the MOD is .78". Long life up to 30,000 hours. CE and Rohs.