The hardest part of this is designning the LED array, and that's not really hard. You can use a site like LED series/parallel array wizard to come up with the best way to wire your LEDs and resistors, based on your LED and power supply specs.These LEDs aren't even soldered together. I just poked them threw the plastic-foam and twisted the ends together with a needle-nosed pliers. I did solder the power and fan leads to the ends of the LED array though, but the LED and resistors are just twisted together and the extra wire clipped off near the base of the twist.-Loki