ok… i want to put a aftermarket headunit, and my amp and subs into this truck. problem, it has the premium sound package, so theres a amp in back, i got the harness,s that are supposed to bypass the amp, but theres still 3 harness,s that go into the radio. i bought the harness thats supposed to work but it does not fit on any of the 3 harness,s that come from the dash,i pretty much need a how to install for dummies, on how to wire a system in this type of vehicle, ive never had a car with the premium sound nor put a system in one so im a newb at this
thanks steve