1984 Ski-Doo Shop Manual, Page 320Get this manual
SECTION 04 ELECTRICAL SUB-SECTION 06 (TESTING PROCEDURE)
FUSE REPLACEMENT
If no LED lights, check fuse provided in checkera) Unscrew the capb) Replace the fuse with new one (1 amps Midget glass tube type, f 6.4 30 mm) if necessary(