Greg Marsh from the Access Norton forum reached out to ask for some assistance with a wiring diagram.
Greg is doing some work on a Norton Dominator 650ss – a bike I adore.
The wiring is in a bit of a mess, so Greg is in the process of sorting it out.
It has a tympanium regulator/rectifier fitted already as well as a Boyer Bransden electronic ignition in lieu of the original magneto.
Greg reported that the original wiring didn’t even have a fuse, which was a little worrying.
He’s loosely basing the tidied up electrics on the pre-1971 Norton Commando wiring.
It’s definitely worth popping over to Greg’s website and seeing what he’s up to – there is some great stuff over there!!
So without further ado, here is the Wiring Diagram!
Custom Norton Dominator 650ss Wiring Diagram – Greg Marsh PNG 3066×1841
Categories: Custom Wiring Diagrams, motorcycles
You mentioned he had no fuses and was a bit worrying. I don’t see the fuses labeled on your diagram, and what size would they be, 15A?
A concern a friend has is if he needs to install a fuse between the Tympanium and the battery. None of the diagrams show that, I never had one in that location with a similar rectifier/regulator unit (Mitymax).
Comments on why one would go there, and if it was needed, will be appreciated.
There is indeed a fuse in the diagram.
Here is a version of the above diagram that highlights it for you:
Click Here to see fuse location
I would recommend a 15 amp fuse for this sort of application.
A 10 amp fuse would be fine if you were running a magneto instead of electronic ignition.
In some of the other diagrams I have on the site for Norton Commandos with aftermarket ignitions and higher powered charging systems, you will see that if I wire the reg/rec directly to the battery, then I will use a dedicated fuse.
Wiring the reg/rec directly to the battery is not an option on a bike with an ammeter, because it would never swing to a positive charge.
Hope that helps,