1987-2009 Yamaha ATV YFM350X Warrior Raptor Service Manual, Page 217Get this manual
CHECKING OF SWITCHES
1Disconnect the main switch coupler from the wireharness
Never disconnect the main switch coupler by pulling the leadsOtherwise, leads may be pulled off the terminals inside the coupler2Inspect whether any lead is off the terminal inside the couplerIf it is, repair it