1996 Ski-Doo Shop Manual, Volume 1, Page 264Get this manual
Se ion ELECT RI CAL Sub-Section 06 (TESTING PROCEDURE)
VOLTAGE REGULATOR INSPECTION
A faulty voltage regulator is often responsible for frequent burned bulbsCAUTIONNever run an engine with faulty or inoperative voltage regulatorThis could damage the DUCATI CDI moduleConnect wire of the voltmeter to BLACKYELLOW wireConnect the other wire of the voltmeter to YELLOW wireLift the rear of vehicle and support with mechanical standStart the engine at an idle without opening the throttleWARNINGEnsure the track is free of parti+ cles which might be thrown out while track is rotatingKeep hands, tools, feet and clothing clear of trackEnsure no-one is standing in close proximity to the vehicleSlowly open the throttle and accelerate the engine to increase the RPMIf the meter reads over 15 volts, the regulator is defective and must be replacedCAUTIONDo not increase the RPM so the voltage exceeds 15 as the bulb(s) will burnNOTEWhatever the voltmeter type used (peak voltage or RMS) the voltage must not exceed 15 (a defective regulator will allow voltage to exceed 15 as engine RPM is increased)