1986 Ski-Doo Factory Shop Manual, Page 403Get this manual
Section 04 ELECTRICAL Sub-section 06 (TESTING PROCEDURE)
VOLTAGE REGULATOR INSPECTION
A faultY voltage regulator is .often responsible of frequent burned bulbs
TESTING PROCEDURE
- The regulator ground must be checked to ensure the cirCUit IS complete_ If necessary, connect good ground wire from the regulator to the engine Check the regulator with voltmeter, The lighting system mu,st be turned an Connect the red wire of the voltmeter to the low beam whitelblue wire at the bulb connectorConnect the black wire of the voltmeter to good ground,
- Lift the rear of vehicle and support with mechanical