Wiring Diagram - ASCBOF
WARNING: This page is about a different car, the 2005 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.
For references to PG-POWER, see POWER SUPPLY, GROUND & CIRUCIT ELEMENTS - G35 COUPE
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.