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Title: Voltage Regulator connections Post by: impaw on 26 November, 2023, 08:27:07 AM Hello,
As I currently have my engine on a stand, running well, I thought it would be good to test that the dynamo an voltage regulator does a good job. D+ from the dynamo, does that go to the "+" on the underside of the regulator, and DF on the dynamo to the other connection underside the regulator? ...and then 61 and 51 on the regulator to the battery? Title: Re: Voltage Regulator connections Post by: impaw on 27 November, 2023, 04:57:14 PM hmmm
I think I am wrong about these connections. If somebody have the time, could they check where D+ and DF from the Dynamo go on the voltage regulator? Title: Re: Voltage Regulator connections Post by: Kari on 28 November, 2023, 08:14:24 AM Please take a picture of the underside of the voltage regulator and post it here.
Karl Title: Re: Voltage Regulator connections Post by: impaw on 28 November, 2023, 08:59:21 AM Hi,
Picture attached. One of the connectors has a "+" mark, the other seems to be unmarked. As I understand it 51 is the output from the regulator, and 61 is for the charging light. So my bet, as of now is Dynamo "D+" -> VR "+" Dynamo "DF" -> VR unmarked on underside Title: Re: Voltage Regulator connections Post by: Kari on 28 November, 2023, 10:00:44 AM Your bet is right. Make sure all ground connections exist and the other wire from the charging lamp is connected to ignition+ (15)
Is it a Bosch regulator? Karl Title: Re: Voltage Regulator connections Post by: impaw on 28 November, 2023, 10:02:29 AM Great, thank you!
It is a Marelli regulator IŽll try to hook it up in a day or two and see if I can get some charging. Title: Re: Voltage Regulator connections Post by: impaw on 11 May, 2024, 08:06:52 AM Others parts of the project got in the way, and I have not made this work yet.
I suspect the regulator is faulty, but in order to rule out the dynamo- how much voltage should the dynamo itself make, without the regulator attached? Title: Re: Voltage Regulator connections Post by: impaw on 11 May, 2024, 10:26:22 AM
. Measured about 60mV between the two connectors on the dynamo, at idle, and about 250mV at 3000rpm
Title: Re: Voltage Regulator connections Post by: chriswgawne on 11 May, 2024, 03:39:39 PM Over the years I have tried to find to find someone somewhere in Europe who can repair the OE Aurelia Marelli voltage regulators without success.
So these days, if I have a problem I fit a modern sold state regulator inside the original Marelli casing which has been well described by Tim Heath in the UK LMC magazine and also on this Forum I recall. The dynamos themselves rarely need more than new bearings and brushes. Chris Title: Re: Voltage Regulator connections Post by: Parisien on 11 May, 2024, 05:14:21 PM That's very useful Chris, thank you, can you let me know which edition Tim's update appeared in?
P Title: Re: Voltage Regulator connections Post by: impaw on 11 May, 2024, 05:34:57 PM Thank you Chris, this sounds like the way to go!
Thank you Title: Re: Voltage Regulator connections Post by: lancialulu on 11 May, 2024, 08:27:44 PM I agree!
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