BGM ORIGINAL wiring harness suitable for all Vespa PX models up to 1983
Italian version without battery. In this version, the indicators, the horn (so-called buzzer) and all other consumers are supplied with power directly via the AC vehicle electrical system. The ignition base plate used on these vehicles with only 3 cables (contact ignition models) or 5 cables (vehicles with electronic ignition) is suitable for this.
CONVERSION (WITHOUT BATTERY)
This wiring harness is perfect for converting vehicles that have a battery ex works to a simple and straightforward on-board electrical system without a battery. The version with all enclosed switches is ideal for this (BGM6685KT).
ADVANTAGES OF CONVERSION
No battery, therefore less maintenance
All consumers function independently of the battery charge level
No corrosion damage due to an overcooked battery/battery acid
More light output
COMPONENTS REQUIRED FOR THE CONVERSION
VOLTAGE REGULATOR
The simple 3-pole voltage regulator (G|G|M) is always used with this wiring harness (e.g. 9100001). The 5-pin voltage regulator (A|A|B+|G|M) originally used on vehicles supplied ex works with a 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 cell phone/navigation system etc.
IGNITION BASE PLATE /LIMA
The type with 5 cables is used as the ignition base plate (also recognizable by the blue and black cable for the single power supply). The original 7-cable air conditioner of the models with battery can no longer be used. However, due to their age, the cable insulation is often damaged anyway. Conversion to the more powerful ignition base plate of the later Lusso models (e.g: BGM8025N or BGM8032N) is therefore highly recommended. This considerably increases the total light output of the AC system, as no more current is diverted for battery charging. This means that even old PX models can be fitted with a 35/35W lamp. Most 5-wire alternators have a round plug. The wiring harness offered here has 6.3 mm flat plugs (as in the Italian original). 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.
FLASHING 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).
WIRING DIAGRAM
See downloads
(US)
DE | €
