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Alternator & Regulator - Models W/Internal Fan: Description

The Motorcraft Integral Alternator-Regulator (IAR) system with internal fan has an electronic voltage regulator mounted on the rear side of the alternator. Current is supplied from alternator/regulator system to rotating field of alternator through 2 brushes contacting 2 slip rings. Alternating current is rectified to direct current by 6 diodes. See Figure.

Some models are optionally equipped, see appropriate ALTERNATOR article in this section listed below.

Fig 1: Charging System Wiring Diagram
G90E08178Courtesy of FORD MOTOR CO.