Rebaydo 2pcs BA15D LED Headlight 6 Volt Dual Filament works with positive ground or negative ground systems and can operate with 6V AC or DC. The BA15D base is 15mm in diameter with even bayonets and two contacts. The dual filament design provides separate low beam and high beam functions, with up to 650 lumens or 50 CP candle power for high beam and up to 510 lumens or 40 CP candle power for low beam. The bulb is designed for reflector headlights, with most of the LEDs side firing directly into the reflector and some forward firing LEDs to increase brightness. It has a long life of up to 30,000 hours and is comparable to a 20 to 25 Watt incandescent bulb. Since it uses LED technology, the bulb uses 80-90% less energy than an incandescent bulb. Available in White 6000K or Warm White 3000K. Warm White simulates the original incandescent color but provides about 5% less light output than White 6000K. Maximum voltage is 8 volts. White 6000K uses about 282mA at 6.08 volts and is approximately dimmable from 3.00 to 6.00 volts. Warm White 3000K uses about 311mA and is approximately dimmable from 3.84 to 6 volts. Low beam uses approximately 0.112 Amp at 6.9 volts and high beam uses around 0.490 amp at 6.9 volts. The bulb can operate from 5 to 8 volts. M.O.L. is 1.962" and diameter is 0.741". Please make sure the vehicle or motorcycle is regulated to approximately 6 volts. These bulbs are designed for headlights that use a dual filament bulb, with one filament for low beam and the other for high beam. These LED bulbs do not have built-in load equalizers and may require load equalizers to be installed to operate correctly. Every bulb is tested before shipping. Included two bulbs per package. One year warranty from date of purchase. CE and RoHS. Designed for early vintage Ford Model T and Ford Model A headlights. Compatible with A13007D, A13007C, 1188, 1929 Franklin, Pierce Arrow, Model A, A-13007-C, A-13007-D, Snyders A-13007-C, Snyders A-13007-D, Langs 6572BX, GE 1032C, GE 1032, L-1116 6V50/32cp, GE 1000, Mazda 32 & 32C, GE Mazda 1110, GE 1110 Mazda and 1188.