Modern Vespa

Took the Piaggio wiring diagram and cleaned it up. I removed the wire color markings since they didn't match my MP3 and were just a lot of clutter. Hope this helps someone.

Big thanks even though I have a 500, being nice and helpful to others has no price.

the service manual and wiring diagrams are in the wiki section you can download and have them on your computer ALSO they are free

Shame about the missing colours - they were certainly correct when the 250 first came out in Europe!

after 16 years this is the first I have ever heard of someone saying the wiring colors are not correct. SMH

If you want the wire color info the original diagram has it. The purpose of my cleaning up the diagram was so I could wire trace easier.
As far as the difference in colors - perhaps it's because I'm located in the US. All I know is my scoot wiring doesn't match

I take it back - the wire colours are still there in layer 1. However you've lost the multiple layers of each section, so it's not so easy to pick out, say, the starter circuit.

I took my cleaned up wiring diagram and applied colors and wire functions. I have proofed it a couple of times but there might be a few inconsistencies. Hope this helps someone.