anyone with cwithk's leds wanna do some led math for me? im a led noob
 

Ok I'd like to wire 4 of his 3mm led's in a series using the resistors cwithk supplies. So how would I wire them and how many resistors? i really don't know what ohms cwithk's are. These are the specs:

REVERSE VOLTAGE:5.0 V
DC FORWARD VOLTAGE:3.3V TYPICAL
DC FORWARD CURRENT:20mA

This would be much appreciated and plus my differently shaded whites, poorly calculated math of a climate control would also thank you very much.

If hte power source is 12v, just use one resistor on each pos(+) leg of the LED.

the resistors he provide are suppose to work with 12v. when i wired my dome light with his LEDs, i used 1 resistor on each LED.

that's pretty much what I did, but some lights came out dimmer than the closest one to the actual power source. so i was thinking that there was too much resistance and not much juice going to the other led's. =T

wire in parallel.

yezzir.. parallel.. exactly wut i did

in your original post you said you wanted to wire in series. i wired up about 10 LEDs for the dome light in parallel with 1 resistor on each LED and it didn't have any problems. did you solder properly?

I have found out the lowest ohm ressistince, ressister you can use on a direct 12 volt source is 330 ohms. Anything lower than 330 ohms will blow the reason I found this out is becuase the lowest ressitence and wattage ratting allow a brighter light.

=T thanks. maybe ill just redo everything, maybe i have a faulty solder point somewhere.