So I got a 2002 chevy tahoe about 2 weeks ago, and it already had an aftermarket pioneer stereo in it but it doesn't work. I finally got around to pulling it out to try and find out what is wrong with it and who ever installed it didn't get a wiring kit. They just cut wires and did a really bad job of trying to wire it up. I have another pioneer that I want to put in there (its a newer one with USB and iphone/ipod control). Now my question is, how can I wire this up since they cut the adapter off?