2002 Yamaha YFM660 Grizzly factory service and repair manual, Page 384Get this manual
SIGNAL SYSTEM 5.If the low-range indicator light fails to come on: 1.Low-range indicator light LED
Check the LED of the low-range indicator lightRefer to "CHECKING THE LEDs"CONTINUITY
NO CONTINUITY
Replace the meter assemblyNO CONTINUITY
2.Gear position switch Refer to "CHECKING THE SWITCH"CONTINUITY