on the new model its under the seat unit rear right hand side its a rubber cased unit where the ositive lead from the battery goes
simple as to fit,
undo both leads on solenoid, disconnect wiring loom connector (white square connector) slide off mount, slide new one on and reconnect all leads, be careful if using a wratchet not to touch both metal pins underneath that the leads connect to or you get a spark and the engine will try to start
YAMAHA part # 4KD-81-940-00