Ford Taurus 3.0L/3.0L SHO/3.8L Charging System Wiring Diagram (Alternator IAR)

This is page 12-1 of a Ford wiring diagram covering the charging system for 3.0L SHO, 3.0L, 3.0L FFV, and 3.8L engines (labeled 'EXCEPT 3.2L SHO'), consistent with a Ford Taurus service manual. The schematic shows the Integral Alternator/Regulator (IAR) with its stator, field, rectifier, and regulator, and terminals B+, S, A, I, and F (including the F screw ground-to-test point). Power flows from the battery through fuse links T and G (gray) in the engine compartment fuse box (page 13-1), and through fuse link F (16 GA brown) from the ignition switch RUN circuit (16 R/LG via connector C259 and splice S210) to the alternator warning indicator (500 ohms) in the instrument cluster (pages 60-1, 63-1). Wire circuits shown include 36 Y/W, 38/36 BK/O, 36 W/BK, and 904 LG/R, with connectors C153, C154, C1066, C108, C250, and C255 (the latter used with digital cluster). Branching differs between the 3.0L SHO and all other engines at the starter motor/solenoid connection (page 20-1). Grounds G100 (engine) and G101 (body) are referenced to grounds page 10-2. An explanatory note describes regulator operation, AC-to-DC rectification, and how the S (stator) feedback signal turns off the charge indicator.