The wiring loom is the nervous system of the Vespa and ensures that the power precisely reaches where it should. The cables are often fragile in the case of a 30 year old barn find, the contacts loose and the cable colours no longer recognisable.
However, a faulty wiring loom does not only affect the electrics but also has a negative impact on the running of the engine. Yet it is almost impossible to find and resolve the error "somewhere" in the wiring loom and the wiring loom must be completely replaced.
That's why we stock the relevant wiring looms for all small frame, wide frame and large frame models. These have exactly the same connections as loads such as headlamp units, rear lights, etc. which originally belong to the respective model. We therefore list all models exactly (if modifications have been made within a range, the corresponding VIN number is also given) and specify the matching wiring loom. This means that among the bewildering choice of wiring looms, you can find the wiring loom which goes with your own scooter. I
f the scooter is retrofitted, for example, to a 12V PX engine with E-ignition or Vespatronic / Parmakit ignition, we recommend that you use SIP Spare Parts wiring looms.
Conclusion: The wiring loom should always be replaced during a restoration
SIP-TIP: The fastest and easiest way is to push a wire or Bowden cable through a horn opening, through the frame in the direction of the tank. Then affix the wiring loom with some adhesive tape and push through and pull forward through the frame. The same then applies to the rest to the steering head and the rear light opening.