Norton Dominator 650ss Cafe Racer – Simplified Wiring Diagram
This is a custom wiring diagram for the 650ss based Cafe Racer that my Dad and I have just finished building.
We wanted to keep the bike nice and simple, and go for the stripped out look, and to match, the wiring is nice and simple too.
It’s a custom loom and wiring job done by me all with modern connectors.
We have a Shorai Lithium Ion battery hidden up under the hump of the seat.
The battery is charged by a Lucas three phase alternator and Podtronics regulator/rectifier which is mounted to a big lump of aluminium (as a heatsink) between the fuel tank and seat – the fins are facing downwards, so you’ll get a decent airflow over it when riding.
The regulator/rectifier goes back to the battery via a dedicated 20 amp fuse.
We have a Key Switch (mounted under the seat) to switch on and off the electrics.
However, it’s a double pole switch – one side normally open and the other side normally closed, which means i have also used it as the kill switch for the magneto.
Instead of an Ammeter, we have used a Charge Warning Light, which is located by the Key Switch.
This is a great unit, which i got from www.improvingclassicmotorcycles.com – it’s a Tri-Color LED showing:
- less than 11.1V = slow red flash
- 11.1V – 12.6V = steady red
- 12.6V – 15.4V = steady green
- 15.4V – 16.1V = steady yellow
- above 16.1V = eye catching yellow flash sequence
To be honest, with a decent alternator, a nice little lithium ion battery and the engine running totally independently off the Magneto, this is over engineered.
The lights turn on and off via a traditional Lucas 57SA toggle switch mounted on the headlight:
- Pilot Light
- Dipped Beam
Then there’s a Wipac Ducon switch on the left handlebar to toggle between dipped beam and main beam.
It’s also the home of the Horn button.
Finally we’ve got the mandatory brake light switch, actuated on the foot brake.
Note – the bike is NEGATIVE EARTH and we’ve stickered under the fuel tank and under the seat as a reminder!
Here is the electrical wiring diagram for the bike:
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High Quality PNG 3066×2168
Whilst I appreciate the bike is a one-off special, the diagram maybe useful for someone that is looking to build something similar.