2004-2005 660 Yamaha Rhino Factory Service Manual, Page 378Get this manual
LIGHTING SYSTEM EB805010
TROUBLESHOOTING IF THE HEADLIGHT ANDOR TAILLIGHT FAIL TO COME ON: Procedure Check: 1Fuses (main, lighting system) 2Battery 3Main switch NOTE: Remove the following part(s) before troubleshooting: 1) Console Use the following special tool(s) for troubleshootingEB802011
4Light switch 5Wiring connections (the entire lighting system)
Pocket tester PNYU-03112-C, 90890-03112
1Fuses (main, lighting system) Refer to "CHECKING THE SWITCH"CONTINUITY