Roadster lighting switch

[John Wakefield]

As we all know the Miller lighting switch as used by Greeves is virtually unobtainable. However I understand from a reliable source that this Lucas switch will do the job, and is a lot cheaper. https://www.ebay.co.uk/itm/193582028862 Lucas Type U39

[mayfield]

Hopefully this can solve an ongoing problem, can someone with the necessary knowledge provide the wiring diagram for such a switch. Many thanks.

[John Wakefield]

This diagram should be the one