How to route RCAs to head unit 04

[des19]

Hey guys I am wondering how to route my RCAs to my headunit in an 04 gtp. What is the most common way to do this for 04+? I have a system running but with stock head unit I am switching the head unit to a pioneer deck so all I will need to do is reroute the RCAs (rcas go to line out converter in trunk right now). It seems all the previous wiring runs under the seat somewhere. Any ideas??

[KeithGTP03]

Remove your back seats, you can probably just get away with removing the lower cushion and leaving the back support in there. Find out which side of the car the power lines for the amp are ran (Im gonna guess that theyre run down the passenger side). Then run your RCA's on the opposite side of that. Just remove the bottom door sill runners and tuck the rca's down in the carpet all the way to the front.

[develand]

I ran mine down the side floor molding...

[des19]

thanks also will I have to do anything for wiring the speakers with monsoon system with aftermarket deck?

[KeithGTP03]

You need this if you dont have on star:
PAC C2R-GM24 (c2rgm24) GM Chime and Data-Bus Integration

You need this if you do:
PAC OS-2C OnStar Interface for 2000-2008 GM Vehicles (OS2C)

You will also need an antenna adapter.