As with any diode, LEDs are polarized. The longer lead is the anode (+). The anode must go to the current source, and the cathode to the drain (lower reference voltage, like ground). You'll need to calculate how much current you want to put through the LEDs (a few milliamps) and calculate your resistance for a voltage divider or current splitter.
Ummm, ok. So the long lead is positive, while the short one gets the ground. Does the resistor get soldered onto the long lead?
What size of a resistor will I need.
BTW, thanks for the info. I'm just a little illiterate when it comes to electrical lingo.