WARNING: This page is about a different car, the 2004 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Navigation System Wiring Diagram - AV-COMM-03
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Navigation System Wiring Diagram - AV-COMM-04
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 3: Navigation System Wiring Diagram - AV-COMM-05