WARNING: This page is about a different car, the 2004 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Wiring Diagram - Audio Midline System AV-AUDIO-03 (1 Of 4)
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Wiring Diagram - Audio Midline System AV-AUDIO-04 (2 Of 4)
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 3: Wiring Diagram - Audio Midline System AV-AUDIO-05 (3 Of 4)
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 4: Wiring Diagram - Audio Midline System AV-AUDIO-06 (4 Of 4)