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Cable harness BGM ORIGINAL suitable for all Vespa PX models up to year of construction 1982

Convert Vespa PX battery to electrical system without battery - conversion wiring harness bgm Vespa PX

You can now easily convert your old Vespa PX with battery

A modern electrical system without a battery on your scooter does not destroy the optics, it is a invisible and economical additional gain in security and comfort, then

  • Without a battery, there is no need to purchase / replace or maintain the battery
  • Your electrics and all consumers work regardless of the condition or charge level of the battery
  • You efficiently prevent corrosion damage to your Vespa PX from battery / battery acid that has boiled over
  • Significantly more safety through increased light output = increased visibility = better to be seen & and better seeing

 

Wiring harnessBGM6685KT_15Wiring harnessBGM6685KT_15
Wiring harness BGM6685KTWiring harness BGM6685KT
Wiring harnessBGM6685KT_1Wiring harnessBGM6685KT_1
Wiring harnessBGM6685KT_3Wiring harnessBGM6685KT_3
Wiring harnessBGM6685KT_2Wiring harnessBGM6685KT_2
Wiring harnessBGM6685KT_5Wiring harnessBGM6685KT_5
Wiring harnessBGM6685KT_6Wiring harnessBGM6685KT_6
Wiring harnessBGM6685KT_10Wiring harnessBGM6685KT_10
Wiring harnessBGM6685KT_4Wiring harnessBGM6685KT_4
Wiring harnessBGM6685KT_7Wiring harnessBGM6685KT_7
Wiring harnessBGM6685KT_8Wiring harnessBGM6685KT_8
Wiring harnessBGM6685KT_9Wiring harnessBGM6685KT_9
Wiring harnessBGM6685KT_12Wiring harnessBGM6685KT_12
Wiring harnessBGM6685KT_13Wiring harnessBGM6685KT_13
Wiring harnessBGM6685KT_11Wiring harnessBGM6685KT_11
Wiring harnessBGM6685KT_16Wiring harnessBGM6685KT_16
Wiring harnessBGM6685KT_14Wiring harnessBGM6685KT_14

 

Conversion wiring harness for all Vespa PX models built up to 1982

This wiring harness is perfect for connecting your Vespa PX, which has a battery from the Piaggio factory, to a modern and maintenance-free  Electrical system retrofitting without battery. We offer an inexpensive and practical set with all the new switches and ignition lock you need (BGM6685KT).

Cable harness in a set with switches

In addition, this is for an exchange / restoration of the PX wiring harness in the Italian version for models without battery. In this case, the indicators, the horn (so-called buzzing) and all other consumers are supplied with power directly via the AC on-board network. The ignition base plate used in these vehicles is suitable for this with only 3 cables (contact ignition models) or 5 cables (vehicles with electronic ignition).

Cable harness individually without switch

Vehicle models:

Vespa PX battery-free: conversion without battery

For the conversion of your scooter to the modern electrics, you need the following parts and in the future you will save the battery, the wintering and the care / maintenance of the vehicle battery

  • VOLTAGE REGULATOR
    Basically, the simple 3-pin voltage regulator (G | G | M) is used with this wiring harness (e.g. 9100001). The originally used 5-pin voltage regulator (A | A | B + | G | M) can still be used in vehicles that were delivered from the factory with a battery. Only connections B + and G remain unoccupied (formerly charging current for the battery). A better alternative is the compact and powerful BGM Pro voltage regulator (BGM6690). This can, for example, also supply a USB socket with 12V DC voltage for charging the mobile phone / navigation system etc.
  • IGNITION / IGNITION BASE PLATE / LIMA
    The type with 5 cables is used as the ignition base plate (also recognizable by the blue and black cables for the single power supply). The original 7-wire Lima of the battery models can no longer be used. However, due to their age, these very often show damage to the cable insulation anyway. A conversion to the more powerful ignition base plate of the later Lusso models (e.g. BGM8025N or BGM8032N) is therefore highly recommended. This increases the overall light output of the AC network considerably, as no more electricity is diverted to charge the battery. This means that old PX models can also be equipped with a 35 / 35W lamp. Most 5-wire alternators have a circular connector. The wiring harness offered here has (as in the Italian original) 6,3mm flat plugs. Either the wiring harness can be converted to a circular connector or the ignition base plate to a flat connector. The necessary parts can be found in the accessories.
  • FLASHING RELAY
    The battery models use a DC (direct current) flasher relay.
    After the conversion, an AC (alternating current) flasher relay is required (e.g. 1195703).
  • INSTRUCTIONS / WIRING DIAGRAM
    The following will help you connect the cables Instructions / wiring diagram.

Checklist: Spare parts / parts that are connected to the wiring harness

In order for everything to work, you should go through this list and check that your old parts are still OK. If not, you can order them directly in our Vespa shop using the link:

* 9512115? 9520072 + 9520074 / ** 9512027? 7675200 + 7675201

CONCLUSION: Absolutely sensible conversion to modern, more powerful and maintenance-free electrics

 

Tutorial installation wiring harness video instructions

This is a PX Lusso harness, it has different connections, so don't get confused. The basic principle of the pull-in is the same and this video tutorial may help you to route and connect the wiring harness in the body of your Vespa.

 

Tutorial SC - Vespa PX Lusso wiring harness Instructions assembly Installation Vespa wiring harness

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Vespa ignition retrofit electronic ignition

Vespa conversion from contact ignition to electronic ignition

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Vespa Largeframe Conversion to electronic ignition

Vespa engines of the LargeframeModels with rotary valve inlet control, e.g. Vespa VNA, VNB, VBA, VBB, VLA, GT, GTR, Sprint, Rally, PX, LML 2T, Bajaj Chetak can now be easily converted:

BGM8032NBGM8032N
BGM8032N-zubo1X1nWb38iGivpiBGM8032N-zubo1X1nWb38iGivpi
BGM8032N-10-Not retouchedBGM8032N-10-Not retouched
BGM8032N-14aBGM8032N-14a
BGM8032N-4BGM8032N-4
BGM8032N-3BGM8032N-3
BGM8032N-2BGM8032N-2
BGM8032N-1BGM8032N-1

Why should I convert a Vespa to electronic ignition?

These are the advantages of an electronic ignition!

After the retrofit, the former weak 6Volt on-board network is available powerful 12 volt light output. The previously self-regulating electrical system is switched to a reliable and bulb-friendly controller control (e.g. with BGM6690) changed. The high-quality cabling ensures that the high light and ignition power With its high wattage, it already provides one when idling very good light outputwhich does not break down even when using the indicators or additional power consumers. No maintenance required! Maintenance work, as is usual with contact ignitions, is not necessary.

Our new bgm ignition: specially developed for converting contact-controlled motors to a maintenance-free electronic ignition:

The latest version of the proven bgm PRO HP (High Power) ignition base plate for converting from contact ignition to electronic ignition.
Suitable for e.g. Vespa Largeframe such as: VNA, VNB, VBA, VBB, GL, Super, Sprint, GT, GTR, TS, Rally

Buy ignition here now

bgm PRO ignition base plate

We have our own brand bgm, tried and tested a thousand times bgm PRO ignition base plate revised and even better did. Particular attention was paid to the very high quality of the bobbins and the pickup.
In addition, the cabling was converted to textile-sheathed silicone lines. A special gimmick is the cord already attached to the cable branch for easy pulling of the cable harness through the cable duct in the motor housing. The base plate now also has a degree of precise scaling for easier setting.

Compared to a conventional electronic ignition, the BGM Pro HP V2.5 ignition base plate has specially combined coil windings.
This significantly improves the efficiency of the alternator and offers a high light output of 120W.

In contrast to a Vespa PX ignition base plate, the BGM Pro HP has one longer and differently laid cable branch so that the ignition base plate can also be perfectly mounted on older vehicles. In addition, it has an adapted base plate contour so that it fits perfectly on engines before 1977 (with a larger shaft seal seat than PX).

  • High light output (120W) thanks to the maximum number of windings
  • Proven excitation coil with copper plate for maximum reliability
  • Pickup with a carbon barrier layer for a clean ignition pulse
  • Neatly processed light coils
  • High quality solder joints
  • Original cable lugs and length for easy cabling
  • Can be combined with additional modules (PiFi, Kytronic, Agusto)

NOTE: The BGM Pickup has a nominal resistance of 100 Ohm (+/- 10Ohm)

Silicone lines

ADVANTAGES OF SILICONE LINES

  • Extremely temperature resistant (-40 ° C to + 250 ° C)
  • Always stay flexible
  • Very good mechanical protection through the textile fabric
  • Resistant to fats, oils, alcohols, oxygen, ozone
  • Very high insulating properties

CONVERSION TO ELECTRONIC IGNITION

When converting from a contact ignition to this base plate, another fan wheel, a voltage regulator and a CDI must be used.
A possibly standard old voltage regulator, like the series ignition coil, is no longer required.
With the BGM voltage regulator BGM6690, a battery (12 volt battery required) can optionally be charged while driving. The old wiring harness can still be used, but the previously individual circuits must be combined here, as the voltage regulator only offers one outlet to the complete power supply. It is easier to convert to one of our conversion wiring harnesses (e.g. 9077011).

Everything necessary for this is available individually or as a set.

Suitable for Vespa oldieLargeframe

The BGM ignition stator fits all Vespa engines of the Largeframemodels with rotary valve inlet control, e.g. Vespa VNA, VNB, VBA, VBB, VLA, GT, GTR, Sprint, Rally, PX, LML 2T, Bajaj Chetak.

Buy ignition here now

Conversion set

In addition to the ignition, you also need a few other parts to convert the engine from contact ignition to electronic ignition. We have put together a practical set for you: BGM6661PRO

All parts are also available individually:

 

PLEASE NOTE
The alignment of the crankshaft in the engine housing, and thus also the position of the pole wheel, is the same as the old one Largeframe Engines (recognizable by the same-sized crankshaft bearings with 25x62x12mm) are significantly more variable than, for example, the later PX engines.

The crankshaft bearings are not fixed in the engine housing by a circlip, but simply sit with a slight interference fit in the housing. Various tolerances (e.g. the width of the shaft sealing rings, worn bearing seats, orientation of the cone on the crankshaft) can lead to significant deviations from the originally intended positioning of the shaft in the crankcase. A prerequisite for a correctly working ignition is that the pole wheel is perfectly aligned with the ignition base plate. Otherwise the trigger surface in the pole wheel will not run parallel to the pick-up, which can lead to misfiring. If the ignition does not produce a spark, the fault is usually to be found here. For easy rectification, we offer spacer plates (BGM8000S05) for the pickup on the ignition base plate. This allows the correct distance to be restored in a simple manner.

 

The bgm PRO conversion ignition fits the following models:

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