• Welcome to the forum website of the Vincent H.R.D. Owners Club.

    Should you have any questions relating to the Vincent H.R.D. Owners Club, or Vincent H.R.D. motorcycles in general, please contact Graham Smith, Online Forum Webmaster by calling 07977 001 025 or please CLICK HERE.

    You are unrecognised, and therefore, only have VERY restricted access to the many features of this forum website.

    If you have previously registered to use this forum website, you should log in now. CLICK HERE.

    If you have never registered to use this forum website before, please CLICK HERE.

Sold state AVC


Forum Website User
VOC Member
The instruction sheet which came with my recently acquired solid state voltage regulator relates to a Lucas dynamo, and mine is a Miller D6, so I need help.
1. There are two holes in the non-metal end of the dynamo under the end-cover. A pair of wires comes out of each hole. I assume one pair are the ends of the field coil which activates the electromagnet. What are the other pair and which pair is which?

2. Wires "A" and "E" from the regulator connect to the ammeter and to earth - so far so good. To which of the terminals under the dynamo end cover do the wires "F" and "D" from the regulator connect?



Well Known and Active Forum Website User
VOC Member
What solid state regulator do you have? Most will only work with Lucas dynamo's and to use them on Miller ones you have to rewire the miller as per Stevens Mod in know thy Beast.John


Well Known and Active Forum Website User
VOC Member
Many thanks. I wish I had been told this by the person who sold me the AVC.

Don't panic. I haven't had a Miller for a long time, but I don't remember the conversion being difficult.



Well Known and Active Forum Website User
Non-VOC Member
Howdy sir,

Pictured below is a 6V neg ground PODtronics fitted to my D6, (click here and scan down to Electronic Regulator for explanation) it is as straightforward a conversion as performed with an E3L. If you haven't already, probably a good idea to verify you have a simple single field coil (I have a spare D6 that has 2 pairs of field coil wires). If so, conventional electronic regulators have the following - this using POD's wiring colors:

output wire to ammeter (red)
ground wire to generator body/chassis (black)
armature wire (yellow)
field coil wire (green)

At the end of the day you are looking to have one end of your field coil joined to the armature brush which in turn exits the generator to the yellow. The other field coild wire connected to the green wire. To ensure your polarity is correct and the generator turning clockwise when viewed from the drive end, good idea to bench test. On a negative earth system attach field coil wire paired with armature wire to battery positive and ground wire from genie case and other end of field coil to battery negative. It should motor about 100rpm without any notchiness (indicates open segments on your commutator)

Now equiped with accurate voltage regulation you can take advantage of modern battery technology in the form of fitting at AGM. Specs for that at my site link above. Good luck.

Warning! This thread is more than 12yrs ago old.
It's likely that no further discussion is required, in which case we recommend starting a new thread. If however you feel your response is required you can still do so.

Photos from the 2022 North American Rally

Photos from the 2022 Annual Rally

Photos from the 2022 French Rally