1986 Ski-Doo Factory Shop Manual, Page 402Get this manual
Section 04 ELECTRICAL Sub-section 06 (TESTING PROCEDURE)
FUSE REPLACEMENT
If no LED lights, check fuse provided in checker, a) Unscrew the cap
bl Replace the fuse with new one (1 amps Midget glass tube type, 9J 6.4 )( 30 mm) if necessary0n I