Wal-Mart has a premium sound wire harness that is supposed to work on Contours w/ premium sound. I was wonderin if it is any good. It's only like $10 but i was just wonderin if it should work or not. BTW I have a pioneer CD Player and 2 pairs of Alpine 100W speakers if anyone is lookin for some. I haven't set a price or anything.

whats the purpose of it?