Just thought I'd give a heads up on a great deal from Parts Express that I just took advantage of... a complete "amplifier" (or PC) wiring kit for just $2.50. It's on buyout, so this won't last long. And if you want to go for higher guage, they also have a 10 AWG kit for $ 8.87 (but I think they are currently out of stock).

Road Gear RG1W 12 AWG 150W Amplifier Installation Kit - Sku 269-904

Phoenix Gold RFS100 10 AWG Amplifier Installation Kit -Sku 269-138

And if you feel like helping out a forum friend, head to my site (linked below), follow the deal of the day PE ad at top right, enter the sku numbers, and earn me a couple cents on the sale.