Hi there,
As the Matrix Infinity only draws 3.3v for power, 30AWG Kynar can be used for the +3.3v wire. As for the ground wire, it would be advisable to link this pad directly to a ground surface on the board as opposed to linking it with a wire. It not only anchors the chip in place a lot better, but also provides the shortest path to ground. Any exposed golden edge around the edge of the board can be scraped back and the ground pad linked there.
To do this, tin the pad on the chip, scrape the lacquer back on the motherboard edge and place a small amount of solder in a spot on the exposed area. Then, tape the chip in place so the ground pad and the small spot of solder on the edge of the board line up. Now, add small amounts of solder onto the spot at the edge of the board until the spot becomes level with the GND pad on the chip. With your soldering iron, simply tease the solder across to bridge the gap (add a small amount of solder if necessary). You should find that a neat solder bridge forms between the 'GND' pad on the chip and the edge of the motherboard. This is by far the best way to connect the chip to ground. (If you need a picture to show you what I mean, I can show you one).
As I say, 30AWG kynar is perfectly fine for the rest of the install including the power line...
Hope that helps...
LUFCfan
