I am a novice at working with Car Audio -

I'd like basic directions on how to access the Head Unit's rear wiring.

I need to get to the antennae input first.

I do not have the NAV system and the car is an 04 roadster manual shifter.

I am going to put the XM Delphi Roady mounted in the dash compartment and need to wire it accordingly.

Thanks,

Jeff