Electrical system

Electrical components

~1min read
Electrical components

1. Main switch

2. Clutch switch

3. Front brake light switch

4. Ignition coil

5. Throttle body sensor assembly (intake air pressure sensor, intake air temperature sensor, throttle position sensor)

6. FID (fast idle solenoid)

7. Rectifier/regulator

8. Lean angle sensor

9. Starting circuit cut-off relay

10.Turn signal relay

11.Radiator fan motor relay

12.Headlight relay

13.ECU (engine control unit)

14.Fuse box

15.Starter relay

16.Battery

17.Rear brake light switch

18.Sidestand switch

19.Neutral switch

20.Crankshaft position sensor

21.Coolant temperature sensor

22.Speed sensor

23.Radiator fan

24.Horn

Test yourself

A quick Yamaha YZF-R125 quiz: every answer comes with an explanation and a link to the manual page.