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Two-wire alternator and three-wire regulator/rectifier

JasonC

JasonC

Cruisin' Guzzisti
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I am replacing the regulator/rectifier yet again on my 2010 V7 Cafe; this is the third one in about two years.

Notably my alternator has two wires but my replacement regulator/rectifier has three wires. So once the input connection is made, the third "leg" of the regulator/rectifier is not connected to anything. I assume that a two wire alternator is compatible with a three wire regulator/rectifier, or is this possibly the reason for my ongoing failures?

Jason
 
Regulator on wiring diagram shows 2 yellow, 2 green & 2 red/white
The 2 yellow goes to 2 yellow on alt
Have no idea what you bought.
 
Last edited:
V700Steve said:
Regulator on wiring diagram shows 2 yellow, 2 green & 2 red/white
The 2 yellow goes to 2 yellow on alt
Have no idea what you bought.
Click to expand...
I bought the first two regulators from the "Store" on this site. Attached is a pic of one of the failed regulators showing the three input wires without the plastic plug attached.

Since those two didn't perform well I bought the third one from eBay. And like the previous two regulators, it has three wires for input from the alternator. I assume it doesn't make a difference but thought I would check with the collective brain.

Jason
 

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This one has 2 yellows, may have to change connectors. BUT may work better.

gtmotocycles.com

ESR Voltage Regulator

ESR Voltage Regulator/Rectifier This ESR VR is a superior replacement regulator/rectifier for the unreliable Ducati Energica unit for ALL older models with bullet connectors (as shown). It's built using a high quality 4-diode rectifier bridge, and the latest generation voltage control circuit as...
gtmotocycles.com gtmotocycles.com
 
V700Steve said:
This one has 2 yellows, may have to change connectors. BUT may work better.

gtmotocycles.com

ESR Voltage Regulator

ESR Voltage Regulator/Rectifier This ESR VR is a superior replacement regulator/rectifier for the unreliable Ducati Energica unit for ALL older models with bullet connectors (as shown). It's built using a high quality 4-diode rectifier bridge, and the latest generation voltage control circuit as...
gtmotocycles.com gtmotocycles.com
Click to expand...
Thanks, I'll give it a shot when the regulator I just installed fails.

Jason
 
Something here sounds wrong to me . Regulators with 3 input leads are 'Usually' for a 3 phase alternator . 2 leads
are 'Usually' for a single phase alternator . Expecting them to work on the other alternator strikes me as IFFY at best .
Peter
 
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