1983-1988 Genuine Yamaha Enticer/Excell III 340 Series Snowmobile Service Manual, Page 119Get this manual
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EC340G Speedometer light (12V 3.4W) Tachometer light (12V 3AW) High beam indicator light (12V 3AW) Main switchON'LIGHTS
En gi ne stop switch
Headlight beam switch