Satellite Radio Tuner (Factory installed)

WARNING: This page is about a different car, the 2006 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

Power is supplied at all times

through 20A fuse (No. 31, located in the fuse and fusible link box)
to satellite radio tuner pre-wiring terminal 32.

With the ignition switch in the ACC or ON position, power is supplied

through 10A fuse [No. 4, located in the fuse block (J/B)]
to satellite radio tuner pre-wiring terminal 36.

Ground is supplied through the case of the satellite radio tuner.

Then audio signals are supplied

through satellite radio tuner pre-wiring terminals 21, 22, 23 and 24
to audio unit terminals 41, 42, 43 and 44.