1987-2009 Yamaha ATV YFM350X Warrior Raptor Service Manual, Page 258Get this manual
SIGNAL SYSTEM SIGNAL SYSTEM CHECK 1"REVERSE SIGNAL SYSTEM" indicator light does not come on1Bulb and bulb socket NO CONTINUITY Check the bulb and bulb socket for continuityCONTINUITY 2Reverse switchDisconnect the reverse switch coupler CD from the wireharness-Check the switch component for the continuity between "GreenBlue" Cl) and frame earthINCORRECT
IELEC lSi
Bulb and or bulb socket are faulty, replace
GIL Earth
IN REVERSE FORWARD