Hello, I just got a harmon/kardon drive and play ipod interface for christmas for my tc. I got it all wired up and it works. But I used the cigarrete lighter to power it.

I was wondering if anybody knows how to hard wire it in? Like if I tap in to other wires, which wires go where? The wire kit that comes with the kit has three wires: black(ground), yellow(with a fuse attached to it), and a red wire. If anybody could help me that would be excellent! thanks in advance