Series Voltage Regulator RMS020-106028 for Polaris Ranger 800 and More

Polaris Ranger 800, Indian, Honda TRX 420, Yamaha Sidewinder and Can-Am Outlander, 2002-2025

This is a series voltage regulator, part number RMS020-106028, covering the Polaris Ranger 800, Indian motorcycles, the Honda TRX 420, the Yamaha Sidewinder and Can-Am Outlander models across the 2002 to 2025 model years. Series regulation is the most advanced of the three common charging system technologies, and it is a meaningful step up from both shunt and MOSFET designs.

The difference is in how it handles surplus current. A series regulator only allows power to flow through the electrical components when the battery is actually charging, so it runs much cooler than either the shunt or the MOSFET voltage regulator rectifier. That means a lower current draw from the stator when the system is idle, longer component life throughout the charging circuit and far less heat stress on the regulator itself. The unit also has overheat protection, temporarily disabling operation so it can cool rather than burning out, and it has a compact mounting profile at 84 mm wide, 90 mm long and 32 mm high with 69 mm between the fixation hole centres. It uses two plugs and five pins, delivers a minimum charging voltage of 14.5 V plus or minus 0.5 V, handles a maximum charging current of 50 A / 500 W, holds open circuit voltage below 15 V and operates from -20 C to 85 C. The opposite connector for the main harness is included, as the original is frequently melted or corroded. Note that the 2006-2007 Can-Am Outlander 400 needs custom wiring: the outer and centre stator yellow wire pairs must each be spliced into a single conductor and connected to the supplied grey connector, battery positive goes to the inner terminal of the black connector and battery negative or ground to the outer terminal, the centre black connector terminal is unused, and a custom mounting bracket must be fabricated. Before fitting any application, verify the stator AC output, replace burned or corroded connectors, repair melted wiring and apply high-temperature dielectric grease on all connections.