Yamaha XV19SW Service Manual page 412

ELECTRICAL COMPONENTS
1. Cylinder-#2 right ignition coil
2. Cylinder-#2 left ignition coil
3. Fuel sender
4. Engine temperature sensor
5. Cylinder-#1 left ignition coil
6. Cylinder-#1 right ignition coil
7. ECU (electronic control unit)
8. EXUP servo motor
9. Speed sensor
10. Rectifier/regulator
11. Neutral switch
12. Horn 2
13. Horn 1
14. ISC (idle speed control) unit
7-68