WARNING: This page is about a different car, the 1999 Mazda B4000, 1999 Mazda B3000, and 1999 Mazda B2500. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Central Timer Module (CTM) System Wiring Diagram
Fig 2: Generic Electronic Module (GEM) System Wiring Diagram (1 Of 2)