1998-2001 Yamaha YFM600FHM Grizzly Factory Service Manual, Page 331Get this manual
SIGNAL SYSTEM Turn the main switch to "ON" Check for voltage (12 V)
OUT OF SPECIFICATION
MEETS SPECIFICATION
The wiring circuit from the main switch to the bulb socket connector is faulty, repair it
This circuit is not faulty
3.0il temp warning light does not come on when the start switch is pushed on, or oil temp warning light does not come on when temperature is high (more than 147.5162.5C (297.5324.5F