Alternator & Regulator: Description
There are 2 types of alternators used, the 12SI and 17SI (Systems Integral) series with built-in voltage regulator. All 12SI alternators have "Y" stator windings, while all 17SI have delta windings. See Fig 1. The CS130 (Charging System) alternators have a high amperage output. This alternator does not have a diode trio.