The cable colors of the Vespatronic ignition differ strongly from the conventional color scheme of a Piaggio wiring harness for electronic ignitions (which is also continued by the BGM Pro conversion wiring harness).

Piaggio/BGM use green (engine off), blue (luminous flux), black (ground).

SOLUTION
The BGM Pro wiring harness ingeniously connects the Vespatronic with the conversion wiring harness. The cable colours on each connection side of the BGM Pro cable branch correspond to the Vespatronic or the BGM Pro cable harness. So you only have to connect color on color to get a fully functional ignition. The cable loom is ready for installation, with ready pressed and insulated cable lugs/circular plugs.

NECESSARY WORKS
The Vespatronic ignitions are delivered with loose cable ends (without pre-assembled cable lugs). The BGM Pro cable load is therefore supplied with cable lugs to provide the Vespatronic cables with eyelets for the BGM Pro conversion cable harness with a central round plug (as with PX Lusso and PK) (cut off the already mounted cable lugs on the conversion cable harness).

Both jobs can be done with either a crimping tool or a soldering iron (corresponding tools can be found under the "Accessories" tab).

GREY CABLE LOAD (light/motor off)
The cable load with the grey protective sleeve is connected to the Vespatronic with the ring lugs (in the cable box attached to the motor). The other end with the round plug is connected with the BGM Pro Conversion cable harness (here replace the normal cable lugs with the enclosed round plug beforehand).

BLACK CABLE LOAD (ignition coil/CDI)
The cable load with the black protective sleeve is also connected, colour on colour, in the cable box on the engine. The other end is led to the CDI/ignition coil of the Vespatronic and connected there (reverse polarity protection by cable lugs of different sizes). Depending on the vehicle and engine, this cable can be shortened individually if necessary (e.g. if the CDI is mounted very close to the cable box).