I am trying to get a 1957 C10L running, but the wiring is a mess. Firstly should it be negative or positive earth and does anyone have an easy to read wiring diagram with colours marked? Thank you.
This is the wiring diagram published by Wipac for 1955-58 C10L
Thanks Julian, but that diagram shows the 2 plugs in the headlamp whereas mine only has one. Can you help further? Thanks.
The twin switches came in around August 1955.
Below shows the headlamp assembly Wipac sheet covering August 1955 on.
Are you sure the bike is 1957?
I will add some single switch wiring diagrams, pre Agust 1955, but note that the one posted previously has a 3 wire alternator and the singles switch diagrams shows a 4 wire alternator.
These are the single switch wiring diagrams.
Thanks Julian, it's definitely may 57 with a Lucas headlamp. As someone new to this site, can I add a photo of the inside of the headlamp so you can comment? Thanks
Yes please post a photo or photos it might help solve the issue.