1980 Ski-Doo Shop Manual, Page 199Get this manual
SECTION 04 SUB-SECTION 02, (ELECTRICAL TESTS)
ONE CYLINDER ENGINES
1GENERATOR COIL OUTPUT
1Disconnect blue and black wires from terminal (15) of ignition coil2Attach tester lead to blue and black wires previously disconnectedConnect tester lead to good engine groundLIGHTING COILS OUTPUT (247 ENGINE TYPE)
NOTE: There are two Independent calls; main (large) coil wires are yellow and yellowblack while brake light coil (small) wires are green and greenblack1Disconnect wiring harness junction block at engine2Connect tester leads as illustrated uSlOg two (2) harness adaptors
large call yellow and yellowblack wires small coil: green and greenblack (or ground) wires
3Set tester dial and sWitch as follows: Engine type
Switch position
HIGH HIGH