Yamaha MBK MW125 2014 Service Manual page 299

IGNITION SYSTEM
1. Crankshaft position sensor
4. Main switch
6. Signaling system fuse
8. Battery
9. Negative battery lead connector
10.Main fuse
13.Sidestand switch
22.ECU (engine control unit)
23.Ignition coil
24.Spark plug
28.Engine ground
31.Lean angle sensor
60.Frame ground
8-2