handlebar switchs

T160 and T140E are the same part. And there are some copies, Sparx comes to mind.

They appear from time to time on eBay etc., although often knackered and at silly prices.

If you're not obsessed with originality, Japanese switchgear, 20 year old Honda say, is better, cheaper, also black and readily available (push-to-cancel indicators - yeah). Of course, you'll need a seperate clutch lever clamp.

One of the Indian Royal Enfield handlebar switches would do all the functions and was in black but the wiring of it was bit confusing. At the same time I am very happy to make a switch work (assuming it is all there) if you get stuck.

The original Lucas switches do come up quite regularly on eBay, nearly always off T140Es (T160s gave the older T140V type switchgear).  The difference between them is that the T140E version and the Mk3 is that the T140E electrical connections are either bullet connectors or black plastic block connectors.  The white plastic Mk3 connectors are still available, so not an issue. Most will need refinishing - changing to the Mk3 matt black finish is straightforward.

Pricewise, either can vary considerably from £40ish to eye watering silly figures if bid up.  But sensibly priced examples can be bought with a little patience.