Sailing Into the Mystic · video

What this video covers

Installing a 120-amp Balmar alternator on a 1988 Irwin requires a serpentine belt conversion and specific wiring for an external regulator. To protect the lithium house battery, the system uses a DC-to-DC charger that draws from the AGM start battery, which the alternator charges directly.1:38 When installing the new alternator, apply Tef-Gel to all contact points between dissimilar metals to prevent corrosion and use blue Loctite on mounting bolts.3:01 The Balmar 618 regulator requires a battery sense wire connected to the positive terminal of the house battery to accurately monitor voltage.7:18 Wiring the regulator involves connecting the ignition input and dash lamp signal from the existing Yanmar harness to the regulator’s designated pins.11:26 After installation, the regulator must be programmed for the specific battery chemistry, such as AGM, and the field output can be reduced to extend the alternator's lifespan.12:12 Proper cable sizing, high-quality marine lugs, and correct crimping are essential for system reliability.18:46

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