Yamaha XP500 Service Manual page 547

TRBL
SHTG
FAULTY LIGHTING OR SIGNALING SYSTEM..............................................9-5
HEADLIGHT DOES NOT COME ON ........................................................9-5
HEADLIGHT BULB BURNT OUT.............................................................. 9-5
TAIL/BRAKE LIGHT DOES NOT COME ON ............................................9-5
TAIL/BRAKE LIGHT BULB BURNT OUT.................................................. 9-5
TURN SIGNAL DOES NOT COME ON .................................................... 9-5
TURN SIGNAL BLINKS SLOWLY............................................................. 9-5
TURN SIGNAL REMAINS LIT...................................................................9-5
TURN SIGNAL BLINKS QUICKLY............................................................ 9-5
HORN DOES NOT SOUND ...................................................................... 9-5