first things first, i have to thank one of our members for letting me poke and prod his truck. so thank you mpyle101.
things were a bit difficult today, so i dont have any new info yet. however it was not a total loss. i was able to get good info regarding the wiring behind the radio. so now i can do more research. this is till a work in progress. hoefully i can get some schematics soon. i will let you know
I must have misinterpreted the OP. It sounded like you had the solution all figured out already, it was just a matter of documenting/illustrating the procedure for the forum. With full respect, I don't think it can be done, but I will be happy if proven wrong.