SurePower ECM Bypass for Polaris Sportsman Magnum Trail Boss 330-700 2003-2006 | 2203348 4011110 4010937 2203118 4011803Many years of Polaris ATVs used the SurePower ECM module that controlled many things on the vehicle, including circuit breakers, cooling fan operation, and most importantly voltage regulation for the battery charging system. Most of these functions are reliable, except for the most important, the voltage regulator rectifier! The voltage regulator often fails, and leaves you faced with replacing the entire module just for this one function, which is