Thanks for the info as far as testing. I actually started doing that last night. I installed this same system in my 2000X with no difficulties. The 03 with the RF System has an extra bowl full of spaghetti looking wires that have been a little intimidating. I did run new wires for the back speakers but a half hour or so of fighting to fish wires through to the door speakers using a hanger with no success I decided to cheat and use existing wiring. Can't seem to get a hanger through the grommet. If I were to actually make it through, I'm not sure I would be able to grab hold of the wiring with anything. Space is very tight. Any suggestions or known tricks to actually do this would also be appreciated.