custom led strips?

To start, my car is an '01 Chevrolet Impala. Well, I'm kinda a novice at car wiring, but I recently came into a ton of green LEDs, and green being my favorite color, I decided I would try to make my own LED strips to replace my current green neon kit in my car. Got to thinking about it a bit, and for some reason, I'm confused. It's probably an easy answer, but for some reason I can't figure it out. Here's the info on the LED Reverse Current (uA) : <=30

Fv: 3.0v - 3.4v

Life Rating : 100,000 Hours

Max Power Dissipation : 80mw

Max Continuous Forward Current : 30mA

Max Peak Forward Current : 75mA

Reverse Voltage : 5~6V I was reading alot about resistor this, resistor that. I came up with a few basic wiring diagrams. Now, I'm pretty sure all of these will work, not 100% sure on that. But the problem I was having was with paring these up... For some reason I can't figure it out. I want each strip to have 12 LEDs. Meaning that with Diagram 1, it'd take 3 "strips". Now do I need to wire each of the 3 strips to a common positive wire? Like, how exactly could I get 12 LEDs on a strip in a series, without having 3 positive wires, and 3 negative wires? I'm sure I'm just being a moron. A diagram would be greatly appreciated. Thanks =D

Diagram 2 or 3 will work fine.  Diagram 1 will fluctuate in brightness with alternator output.  And the LEDs will not be as reliable.

Ok, so I'll go with the 500 Ohm resistor per LED setup. Does the wattage matter? And to put my question up again. How exactly can I wire these together into sets of 12? I know it can't be (+) --RESISTOR---LED---RESISTOR---LED---RESISTOR---LED---ETC-- (-) Do I need to do something more like this     - RESISTOR - LED - (-)     | (+) - RESISTOR - LED - (-)     |     - RESISTOR - LED - (-) But to make a strip, that is going to take alot of wire. So how would I go about putting these things onto a strip?

I would probably do it on a proto circuit board.  Solder the resistor and LEDs in to the board and then connect all the powers and ground on the bottom of the board with solder. Kevin Pierson

Cool, will do. Thanks =D It might be a week or so before I actually get around to doing this. But I'll try to post pictures when I do.