hey all
first off, what gauge of wire do power supply's use, secondly how do i know how strong of a rsistor to use for an led?
thanks,
- legit

For the wire gauge i think i heard 20 or 22 not sure for the led it depends where you plug it in, on 5V i think it's 75 Ohm on 12V i use between 450 and 475

all of the leds will be on a 12v line, is there any calculator or anything that i can look at?

If you can find out the voltage and current of the LED, that would help.

Then to find the resistance (while using a 12V supply) you just do:

R= (12-(Voltage-LED))/(Current-LED)

Remember to convert units to Volts and Amps (most likely the current will be in milliamps.

sweet, i have one question, whats VAC mean, and thanks for the help on the LED's i figured it out,

Will this LED Calculator help?

I always use 22 gauge when vmodding my cards, and it should be about the right size for leds.

VAC is the voltage of an alternating current (like out of a wall socket).

on more question, i have an LED that says its rated at 12 volts, and 30mA its running on a 12v line do i need a resistor?

u always need resistors placed in serie with leds. Leds have very low electrical resistance, which make them close to short-circuits.

Actually there are LEDs that do consist of a resistor and the LED itself. It sounds to me like your LED is one so you can just connect it to the 12V line. But just to be sure, does it actually say "rated at 12V" or is it a noted as a value such as VLED? Or even better, do you have a link?

Well, if you put one on (say a 470 Ohm) like i think you need and it does not need any, nothing will happend.
On the other hand if you plug it in no res. and it needs one .... pooof!
Draw your own conclusions

this is the LED that i bought from radio shack:
http://www.radioshack.com/product.asp?cata...%5Fid=276%2D011

Yeah, just hook it up to 12V. If you look at the specifications it has a 680 ohm in line resistor.