Wiring Diagrams
Vespa-Messerschmitt / Augsburg
| model | indicator | battery | ignition lock | |
| diagram | Touren 125/2 | yes | yes | no |
| diagram | Touren 150/4 | yes | yes | no |
| diagram | Grand Sport/3 | yes | yes | yes |
| diagram | Grand Sport/3 | no | yes | yes |
Motovespa (Spain)
| model | others | ignition | |
| diagram !Shop | 150 S | rectifier under the side panel | contact |
| diagram | 150 Sprint | rectifier on the engine | contact |
| diagram | 150 S | with battery | contact |
| diagram !Shop | 160 GT | electronic | |
| diagram !Shop | PX "Iris" | w/o battery | electronic |