September 30: LEMON manuals is back up on a temporary server! Slowness is possible
Section 78 (Auto Cruise Control System): ICC: Wiring Diagram: Schematic
WARNING: This page is about a different car, the 2008 Infiniti FX45 and 2008 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Auto Cruise Control System - Schematic Diagram