Yamaha YZF-R1 Series Service Manual page 437

IGNITION SYSTEM
3. Main switch
4. Main fuse
9. Backup fuse
12.Ignition fuse
18.Engine ground
19.Battery
23.Joint coupler
25.Handlebar switch (right)
27.Start/engine stop switch
29.Relay unit
32.Neutral switch
33.Sidestand switch
43.Cylinder identification sensor
45.Crankshaft position sensor
48.ECU (Engine Control Unit)
49.Spark plug
50.Ignition coil #1
51.Ignition coil #2
52.Ignition coil #3
53.Ignition coil #4
70.IMU (Inertial Measurement Unit)
*. Joint coupler for YZF-R1
**. Joint coupler for YZF-R1M
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