p45t led headlight. Operates 6 volt positive ground or 6 volt negative ground. Up to 900 Lumen output or 70 CP. Available in warm white 3000k and white 6000k. Long life up to 30,000 hours. Since leds are solid state you do not have to worry about a broken filament or glass. CE and Rohs listed. Dual beam low and high beam. Works great for old vehicles made before World War II such as Ford Model A's and T. Easy DIY replacement just remove old incandescent and replace with new led bulb. Since leds use up to 90% less energy they really help the old generators and alternators with such a reduced load. Comparable to a 55 to 65 Watt incandescent bulb. The maximum diameter is 1.058" inches. The maximum overall length is 1.944 inches. Fits standard connecter such as part number 34265. The pin out looking from the back is: Left side contact is ground. The center contact is low beam. Right contact is high beam.