VESPA GTS Super 125 i.e. Service Station Manual page 62

Electrical system
11. Diagnosis connector - Remove the helmet
compartment to reach it.
15. H.V. coil- Remove the battery to reach it; to
remove the coil, first remove the footrest and undo
the two screws indicated.
20-18-30-38 Horn - Solenoids Remove front cen-
tral cover to reach them.
ELE SYS - 62
Vespa GTS Super 125 i.e.