Any of you know what voltage these light bulbs are or are you

>>60123024
look like signal lights on a car so 12v dc

File: allglass.jpg (59KB, 1032x363px) Image search: [Google]

59KB, 1032x363px

>>60123024
If you aren't able to find out, what are you going to do about it once you know? Determining the voltage and using them kind of go hand in hand. Start with a couple volts ac see if they glow. Voltages of bulbs are usually battery standard voltages. 1.5 volts, 3, 6, 9, 12 volts etc. If it starts to get 'too' bright then use the lowest voltage. It it blows up then you've got three left to run at the lower voltage assuming they're the same. Looks like there's a number on one of them. You can look it up. Incandescent bulbs like these don't burn themselves up like led's and laser diodes. You don't need to limit the current once you get the voltage right. They are basically light emitting resistors. Have fun.

>>60123024
yep, they are light blubs from a many decades old car. I had some of them myself. 12v stuff.

>>60123172
you could control the long/shortbeam at the bottom, giving power to either left or right flat pins.

>>60123024

>>60123068

If they are super old they could be 6V. Cars in the 50's and some motorcycles in the 70's were 6V and all used that style of bulb.

I think they're brake lights cause when I run 12v through them one of the filaments is a low glow and the other is bright

>>60123287

they can also be used as turn signal/running lights. If they did not almost immediately burn up on 12V, then they are indeed 12V bulbs, not 6V.