2001 Polaris SLH, Virage PWC Factory Service Manual, Page 230Get this manual
Electrical Systems MFDMFI TroubleshootingContinued Blowing fuses Power surges or "spikes" are the most common cause of blown fusesThese power surges can be caused by loose connections in the electrical box, poor ground at the engine mount plate, and even corroded or loose battery terminals (not necessarily visible to the naked eye) Any time the battery charging path is interrupted there is potential for voltage "spike" Concentrate your effort there for blown fuses In order to display accurate informationthe MFDMFI must receive accurate dataThis data may be in the form of variable ground path such as the fuel and oil level senders, pressure input such as the speedometer pitot tube, or specific voltage signal like the alternator input for RPM