WARNING: This page is about a different car, the 2003 Mercury Mountaineer and 2003 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Air Bag System Wiring Diagram (Explorer, Mountaineer-1 Of 2)
Fig 2: Air Bag System Wiring Diagram (Explorer, Mountaineer-2 Of 2)