[JerryRice]

I am replacing an indicator bulb with an LED light.
However the LED only take 2 volts while the power coming in is 12v.
How can I get it to work?

Would I add a resistor in line with the LED? if so, what sise
resistor would get me down to 2v?

Thanks

 

[bmartin]

Jerry;

You need to do a web search on OHMS LAW. One variation of the formula is V = I x R. (V=voltage, I = current in amps, R = resistance)
2V = I(current of batter) x R(value your looking for)

One web site you could check for ohms law is: http://www.grc.nasa.gov/WWW/K-12/Sample_Projects/Ohms_Law/ohmslaw.html

One last word, it's not only the voltage draw of the LED but also the amount of current you need to operate the LED.

 

[Geeto67]

Jerry...they make 12v LED car and bike LEDs, use on of them instead of the 2 volt you probably bought at radioshack:

http://www.superbrightleds.com/led_prods.htm

 

[JerryRice]

heeeey how do you know I bought them at radio Shack??

 

[Geeto67]

did the same thing. My radio shack used to sell 12v LEDs until it became unpopular to do so.

Found a local seller (homepro fastners; farmingdale, NY) selling the LED Bolts with bezel and bought those instead of idior lights. Cost $7 a piece but they come with a nice machined stainless bezel and a threaded shaft which makes it easy to install. Well worth it in my opinion, just clipped the ground lead they gave and installed a set of japanese bullet connectors and it plugged into the harness. If you are going to the e-town fall swap meet they will be there.

 

[JerryRice]

Just ordered from SuperBrightLeds.com