TOPIC:

In the "bling" area of autozone I found a 5 pin relay rated for 30 amps for pretty cheap. They didn't have (or didn't know they had) the pigtail. Carquest which is across the street from Azone had the exact pigtail for cheap as well. I seem to have pretty good luck with Carquest...

Something I didn't think to mention until afterwards is that it might make sense to check local audio shops as well. That site I came across sells car audio stuff, and it makes sense that someone with a huge stereo would want that sort of power control device.