Modern Vespa

Hello,

I Want your help and knowledge.

How do I change the 12v conversion switch for vespa rally, for this change:

- Mantain the High and low beam and horn,
- Add the Turn Signal (substitute the other switch function).

Could you help me

Regards

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Unfortunately you cannot use that switch for turn signals. The left side of the switch you pictured shuts off power to the headlight and pilot bulb. Do you have a substitute switch?

You need a separate 3-way switch just for the signals, somewhere on the left handlebar, like in the original US rally.

Unfortunately Beedspeed has changed hands and their terrific wiring diagrams are not available any more. I've saved a few, they are very instructive. Here are the different types of switch and their good and bad points.

If you have a look at the diagram attached, it shows exactly which terminal in the switch goes where.