Peter Scott did my dynamo & magneto back in 1966
I took it back because the battery
was going flat
He informed me I had the wrong regulator it was for the old 45 Watt short dynamo
Well despite it being wrong it had worked faultlessly for 20 years.
Searching for better light because I can no longer get a good globe for the 8" I desided to replace the VR for a modern one
The old unit would turn on & off at night and when it did that the lights would go dim for a couple of minutes till it turned on again .
The only unit I could get at the time was the Wassel one which requires rewiring of the pick ups which I did, checked & double checked it was done as per instructions.
It worked fine for about 18 months then went off the planet, took 3 LED headlight globes ( at $ 50 a pop) with it before I realised the VR was the problem .
So till I can take it back for another repair it is total loss power and no extended night riding.
SO not a big fan of digital VR's although this one was a Wassel & I swore off Wassel products back in the 70's because most of them were trash.