C10l wiring diagram

[ScottB]

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.

[JulianS]

This is the wiring diagram published by Wipac for 1955-58 C10L

[ScottB]

Thanks Julian,  but that diagram shows the 2 plugs in the headlamp whereas mine only has one. Can you help further? Thanks.

[JulianS]

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.

[JulianS]

These are the single switch wiring diagrams.

[ScottB]

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

[JulianS]

Yes please post a photo or photos it might help solve the issue.