VESPA GTS Super 125 i.e. Service Station Manual page 132

Injection
KEY
1. Instrument panel
12. Headlight relay
13. Secondary fuses
17. Engine stop switch
18. Ignition switch contacts
21. Starter relay
23. Battery
24. Main fuses
26. Voltage regulator
27. Injection load relay
28. Electric fan relay
29. Radiator electric fan
30. Lambda probe
31. Water pump
32. Engine speed sensor
33. HV coil
34. Fuel injector
35. Engine temperature sensor
36. Fuel pump
INJEC - 132
Vespa GTS Super 125 i.e.