1847 LED Miniature Bulb works for both 6V positive ground chassis or 6V negative ground chassis. The led bulb is non-polarity 6 Volt BA9S. Sub miniature bayonet. Up to 80 Lumens, about 40 forward firing and 40 Lumens side firing. This bulb is dim-able using a variable power supply such as the dashboard dimmer knob. Rated life up to 30,000 hours. Uses .09 Amps @ 6 Volts. Up to 1 watt LED power comparable to a 10 Watt incandescent bulb. Made with six 5630 SMD led chips. Overall length 1.097" and .47" diameter. T3 1/4 Tubular package. Great for vintage, classic, cars, trucks, tractors, scooters or motorcycles. Excellent replacement for pinball, arcade and amusement rides. This 6v led bulb work great for indicators, turn signals, dome light, interior car lighting, glove box lighting since it is positive ground or negative ground led lamp.