Yamaha WR125R 2009 Service Manual page 315

FUEL INJECTION SYSTEM
1. Crankshaft position sensor
3. Main switch
5. Main fuse
6. Battery
14.Engine stop switch
16.Intake air pressure sensor
17.Intake air temperature sensor
18.Throttle position sensor
19.Coolant temperature sensor
20.Lean angle sensor
21.Self-diagnosis signal coupler
22.ECU (engine control unit)
23.Ignition coil
25.FID (fast idle solenoid)
26.Fuel injector
27.Fuel pump
29.Radiator fan motor relay
41.Headlight relay
56.Engine trouble warning light
57.Speed sensor
59.Headlight fuse
60.Ignition fuse
63.Sidestand switch
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