1985 Ski-Doo snowmobile Service Manual, Page 369Get this manual
Section 04 ELECTRICAL Sub-section 06 (TESTING PROCEDURE)
2Low speed charging coil
3Lighting coil
1) Disconnect wiring harness junction block at engine
Disconnect wire connectors from C.D.1electronic box harness to engine
2) Connect tester test lead to:
YLBK wire and connect test lead to YL wire3) Set tester and dial as follows:
2) At the magneto harness, connect tester test lead to: Black wire and connect tester test lead to black red wire(TYPICAL)
ENGINE TYPE
253,377,447, 462,467,503, 532,537
SWITCH POSITION