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Voltage Regulator Rectifier for Ducati 916 / Monster 900 / SuperSport 750 900 | Laverda Ghost 650 1986-1998 | 54040091A
Voltage Regulator Rectifier for Ducati 916 / Monster 900 / SuperSport 750 900 | Laverda Ghost 650 1986-1998 | 54040091A
Battery condition is extremely important. No voltage regulator can work correctly with a bad or weak battery. Always fully charge your battery before performing any charging system tests or replacing parts. If there is any doubt, have the battery load tested or replaced.

Details
Details
Brand new aftermarket voltage regulator rectifier
- Direct replacement to your original unit.
- Plug-and-play, direct fit, easy installation.
- No assembly required
- Higher grade of electric components.
- Improved heat sink and charging capabilities
- The quality exceeds the OEM equipment
- All products shipped are tested
All item pictures are accurate, if in doubt do not hesitate and compare our item to your original part.
Specifications
Specifications
Dimensions:
Width: 103 mm
Length: 68 mm
Height: 37 mm
Wires length: 280 mm
Distance between fixation holes center to center: 90 mm
Other specifications:
Number of plugs: 5
Number of pins: 6
Number of wires: 6
Minimum Charging Voltage: 14.5 V +/- 0.5 V
Maximum Charging Current: 50 A / 500 W
Open Circuit Voltage: <15 V
Operation Temperature: -20°C to 85°C
Please Note: This regulator is used on many various Ducati models. The wire function of our regulator is described below:
- Yellow wires: Stator AC in
- Red wire: Battery positive
- Black wire: Keyswitch+12V
- White wire: Charge warning dash indicator light
Interchange Part Nº
Interchange Part Nº
- 69920831B
- 69920821B
- 69920841A
- 54040081A
- 54040091A
- 54040131A
- 080546758
- 54010161A
- 54040011A
- 037038500
Installation
Installation
- Check the AC output of the stator.
- Replace any burned or corroded connectors on stator and regulator/rectifier.
- Check and repair any melted wiring.
- Use hi-temp dielectric grease on all connectors.
Warning:
Risk of electric shock. Disconnect the battery before servicing.
Ensure proper installation by a qualified technician to avoid malfunction.
Vehicle Fitments
Vehicle Fitments
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