Convert Vespa PX battery to electrics without battery – Conversion wiring harness bgm Vespa PX

Convert your old Vespa PX with battery now easily

A modern electrical system without battery on your scooter does not destroy the appearance, it is an invisible and economical increase in safety and comfort, because

• Without a battery, there is no need to purchase / replace and maintain the battery
• Your electrical system and all consumers function independently of the battery’s condition or charge level
• You efficiently prevent corrosion damage to your Vespa PX caused by an overcooked battery/battery acid
• Significantly more safety due to increased light output = increased visibility = better being seen & and better seeing

Conversion wiring harness for all Vespa PX models until 1982

This wiring harness is perfect to convert your Vespa PX, which has a battery ex Piaggio factory, to a modern and maintenance-free on-board electrical system without battery. For this purpose, we offer an inexpensive and practical set with all the necessary new switches and ignition lock(BGM6685KT). Wiring harness in set with switches

Additionally, for a replacement / restoration, this is the PX wiring harness in the Italian version for models without battery. On this model, the turn signals, the horn (so-called “snare”) and all other consumers are supplied with power directly via the on-board AC system. The ignition base plate used on these vehicles has only 3 cables (contact ignition models) or 5 cables (vehicles with electronic ignition). Wiring harness single without switch

Vehicle models:

• Vespa (Piaggio) P 80 X (V8X1T, -1983)
• Vespa (Piaggio) P 150 X (VLX1T, -1980)
• Vespa (Piaggio) PX 150 E (VLX1T, 1981-1983)
• Vespa (Piaggio) P 125 X (VNX1T, -1983)
• Vespa (Piaggio) P 200 E (VSX1T, -1980)
• Vespa (Piaggio) PX 200 E (VSX1T, 1981-1983)

Vespa PX battery-free : Conversion without battery

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

• VOLTAGE REGULATOR In general, the simple 3-pole voltage regulator (G|G|M) is used with this wiring harness (e.g. 9100001). The 5-pole voltage regulator (A|A|B+|G|M) originally used on vehicles delivered from the factory with battery can still be used. Only the connections B+ and G remain unassigned (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/navi, etc.
• IGNITION / IGNITION BASE PLATE /LIMA The type with 5-cables is used as ignition base plate (also recognisable by the blue and black cable for the single voltage supply). The original 7-cable Lima of the models with battery can no longer be used. However, due to their age, these often show damage to the cable insulation anyway. 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 total light output of the AC network considerably, as no more current is diverted for battery charging. Thus, even old PX models can be equipped with a 35/35W lamp. Most alternators with 5-cables have a round plug. The wiring harness offered here has (as in the original Italian) 6.3mm flat plugs. Here, either the wiring harness can be converted to a round plug or the ignition base plate can be converted to a flat plug. The necessary parts can be found in the accessories.
• BLINKING RELAY The models with battery use a DC (direct current) flasher relay. After conversion, an AC (alternating current) flasher relay is required (e.g. 1195703).
• INSTRUCTIONS / WIRING DIAGRAM The following instructions / wiring diagramwill help you to connect the cables .

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

To make sure everything works, you should go through this list and check if your old parts are still OK. If not, you can order them directly from our Vespa Shop via the link:

• Horn 232K15
• Indicator front left 9520155S
• Indicator front right 9520049S
• Indicator light 9520072*
• Indicator light 7675200**
• Indicator light 9520074*
• Pilot light light 7675201**
• Ignition lock 4350063
• Light switch 7676859
• Indicator switch 7676856
• Brake light switch 9520018
• Terminal board 1163603
• Flasher relay 1195703
• Ignition BGM8025/-N
• Voltage regulator 9100001
• CDI BGM6668KT
• Cable box 1149082
• Indicator connector 9520077
• Indicator rear left 9520046S
• Indicator rear right 9520047S
• Rear light 5320007
• Bulb BA20d 12V 35/35W 9512035
• Bulb BA15s 12V 5W 9512005
• Bulb BA15s 12V 10W 9512110
• Bulb BA15s 12V 21W 9512013
• Bulb BA7s 12V 2W 9512115
• Bulb BA7s 12V 2W 9512115*
• Bulb W2 x 4,6d 12V 2W 9512027**
• Bulb BA7s 12V 2W 9512115*
• Bulb W2 x 4,6d 12V 2W 9512027**

*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 wiring harness, it has different connections, so don’t get confused. However, the basic principle of the wiring harness is the same and this video tutorial may help you to install and connect the wiring harness in the body of your Vespa.