1999 Ski-Doo Factory Shop Manual Volume One, Page 84Get this manual
Section 03 TROUBLESHOOTING Subsection 05 (ELECTRICAL SYSTEM)
SYMPTOM CONDITION TestInspection
REAR LIGHT BULB FLASHESNORMAL USE1Check bulb tightness in housingaLooseness at bulb contact elementsInstall bulb correctly2Check if rear light is properly connectedaConnector housing is partially connectedInstall connector housing properly3Check continuity of wiresaCorroded terminals andor broken wiresReplace terminal(s) or crimp defective wires
SYMPTOM CONDITION TestInspection