Vespa Primavera 50 - Service manual > Electrical system installation

Front side

1. Left stop button
2. Left control lock
3. Headlight connector
4. Instrument panel connector
5. Right control lock
6. Right stop button

7. Left electrical controls connector
8. Ignition switch
9. Voltage regulator
10. Turn indicator control device

11. Voltage regulator connector
12. Front left turn indicator connector
13. Horn connections
14. Saddle opening switch connector
15. To speed sensor on wheel

16. Headlight relay base
17. Front right turn indicator connect
18. Secondary fuses
19. Speed sensor connector

20. Right electrical controls connector
21. Injection ECU
22. Immobilizer aerial
23. Headlight relay

24. Ground point on chassis
25. Negative battery pole
26. Diagnostics socket
27. Positive battery pole
28. Main fuse
29. To rear cable harness
30. Pre-installation for anti-theft device
31. Saddle opening actuator connector

32. Starter relay
33. Roll-over sensor connector
34. Roll-over sensor

Back side

1. Engine temperature sensor connector
2. Injector connector
3. Oxygen sensor connector
4. Magneto flywheel connector
5. Starter motor positive
6. Starter motor negative
7. Throttle body position sensor connector
8. Idle valve connector
9. H.V. coil connections

Conceptual diagrams

Ignition

KEY

1. Battery
4. Main fuse
5. Ignition switch
6. Secondary fuses
41. Injector
43. Engine speed sensor
44. Engine temperature sensor
45. Lambda probe
47. H.V. coil
49. Throttle body position
52. Injection ECU

Battery recharge and starting

KEY

1. Battery
2. Starter relay contacts
3. Starter motor
4. Main fuse
5. Ignition switch
6. Secondary fuses
7. Voltage regulator
8. Magneto flywheel
18. Stop light
19. Stop buttons
20. Starter button
21. Starter relay coil
35. engine stop switch
52. Injection ECU

Level indicators and enable signals section

KEY

1. Battery
4. Main fuse
5. Ignition switch
6. Secondary fuses
9. Speed sensor
10. Instrument panel
29. Engine oil pressure warning light
30. Engine oil pressure sensor
31. Fuel level transmitter
32. Fuel gauge
33. Low fuel warning light
34. Roll-over sensor
35. engine stop switch
36. Immobilizer LED
51. Immobilizer antenna
52. Injection ECU

Devices and accessories

KEY

1. Battery
4. Main fuse
5. Ignition switch
6. Secondary fuses
10. Instrument panel
11. MODE button
13. Pre-installation for anti-theft device
26. Saddle opening actuator
27. Horn button
28. Horn

Lights and turn indicators

Versions for market USA-CND

KEY

1. Battery
4. Main fuse
5. Ignition switch
6. Secondary fuses
10. Instrument panel
12. Turn indicator control
14. Turn indicator switch
15. Left turn indicator bulbs
16. Turn indicators warning lights
17. Right turn indicator bulbs
18. Stop light
19. Stop buttons
22. High beam warning light
23. Light switch
24. Headlight relay
25. Headlight
37. Left front daylight running light
38. Right front daylight running light
39. Rear daylight running light
40. License plate light
52. Injection ECU

INJECTION

KEY

1. Battery
4. Main fuse
5. Ignition switch
6. Secondary fuses
21. Starter relay coil
34. Roll-over sensor
35. engine stop switch
36. Immobilizer LED
41. Injector
42. Idle valve
43. Engine speed sensor
44. Engine temperature sensor
45. Lambda probe
46. Fuel pump
47. HV coil
48. Injection warning light
49. Throttle body position
50. Diagnostics socket
51. Immobilizer aerial
52. Injection ECU

See also: