WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Lumbar Support System - Wiring Diagram
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Identifying Lumbar Support Connector Terminal (1 Of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 3: Identifying Lumbar Support Connector Terminal (2 Of 2)