5 to 30V positive ground or negative ground nonpolarity. P45t base. Made with 16 Cree 2525 LEDs. Dual filament the low beam Lumens up to 1200. The high beam Lumens up to 1800. Long life 30,000 hours. Made with aluminum for long life. Uses only 800mA. Constant current the driver to reduce flicker. The base is P45D. This led bulb is for old vintage and classic cars, trucks, motorcycles, and scooters. Long-life up to 30,000 hours. 8 LEDs on each side for best illumination. When looking at the connect from the rear the ground is the left-most contact. The center contact is the low beam. The rightmost contact is the high beam. Fits the 34265 socket for easy wiring. Please click on the manual to see the wiring diagram for this bulb. 4 smd chips will be lit for low beam both sides and all 8 smd chips both sides will be lit for high beam. Made with CREE 2525 for maximum brightness and long life. CE and Rohs.