Kmart/Walmart/Meijers etc carry Soche install kits. For a 4 gauge kit with distridution block, 8 gauge runner wires, RCA's, connectors, all that jazz, is about $24. Can't beat it. The RCA's suck, but the wire, connectors, fuse, and block are well worth the $24. And that kit would be large enough for a 500D. Plus it'll be cheaper to get it from one of those stores, look at the shipping on the kits that were listed from Ebay. Sure you can get something simular for $14, but then you pay $13 for shipping.