2002 Ski-Doo Shop Manual Volume Two, Page 207Get this manual
Section 06 ELECTRICAL Subsection 04 (TESTING PROCEDURE)
INSPECTION OF AC CIRCUIT ISOLATION
290 Models If AC circuit is not isolated from frame, headlamp beam will weaken
Current Measurement Mach SPORTTECH PLUS
HIGH INTENSITY LOW INTENSITY BROWN wire BROWN YELLOW wire 0.23 minimum 0.13 minimum
INSPECTION
Disconnect regulatorrectifierPull off the rubber boot of brake light microswitch assemblyConnect one digital ohmmeter probe (needle ohmmeter will not offer enough precision) to frame and other probe to YELLOW wire (2-RE-A)Measured resistance must be infiniteIf such is not the case, it means there is connection between AC circuit and frameDisconnect one accessory at the time to identify the faulty circuit
Handlebar Grip Heating Element