There are two possible keyswitches for the 1988 Yamaha VK 540: For Electric Start Models with a battery refer to RMS110-107834 (OEM# 8K1-82508-20-00 / 8K1-82510-21-00). This key switch has a connector with 5 pins For Pull Start Models refer to RMS110-102911 (OEM# 8K4-82508-20-00 / 8K4-82510-20-00). This key switch has a connector with 2 pins
Aftermarket replacement part for:
Yamaha Bravo 250 -- 1982-1995, 1997-2001, 2006-2011
Yamaha Enticer 250 -- 1979-1981
Yamaha Enticer 300 -- 1981, 1983-1984
Yamaha Enticer 340 -- 1980, 1982-1988
Yamaha Enticer 340 LT -- 1987-1988
Yamaha Enticer 340 LTR -- 1988
Yamaha Enticer 400 -- 1989-1990
Yamaha Exciter 570 -- 1987-1990
Yamaha Exciter 570 Deluxe -- 1988-1989
Yamaha Exciter 570 High Altitude -- 1990
Yamaha Exciter 570 LE -- 1990
Yamaha Exciter 570 LE High Altitude -- 1990
Yamaha Exciter II 570 -- 1992-1993
Yamaha Exciter II 570 LE -- 1993
Yamaha Ovation 340 -- 1989-1990
Yamaha Phazer 480 -- 1984-1986, 1989
Yamaha Phazer II 480 -- 1990, 1992-1996
Yamaha Sno Scoot 80 -- 1988-1990
Yamaha Sno-Sport 125 -- 1990-1991
Yamaha SR 540 -- 1980-1982
Yamaha SR 540 RSR -- 1991
Yamaha SRV 540 -- 1985-1990
Yamaha SRV SR540 -- 1983-1984
Yamaha SRX 440 -- 1980-1981
Yamaha SS 440 -- 1980-1985
Yamaha VK 540 -- 1988
Yamaha V-Max 540 -- 1983-1987