Wired up and tested - works.

This first run uses the eBay switchgear and has the female socket at one end to connect to the chassis wiring, and a male socket to connect the bikes existing LH switchgear.

The eBay switchgear headlight switch is now the RH/LH turn signals - this switch originally had a brown wire which wasn’t needed and was discarded.

Of the original socket pins, on the bike, the clutch switch power and pass switch are reused - no pass/clutch on the eBay switchgear. The bikes original clutch switch is retained and activated by the combined clutch cables. I can live without the pass switch.

Images below show how soldering, and crimping terminals, works when you only have one arm.

Magnets are an arm amputees best friend.

Crimp tool is fixed in the vice and my short arm does the crimping while my fat fingers try to keep the wires and crimp together.

Finished arrangement, with test loom connected to the socket for the existing LH switchgear.

Tested - works! In a perfect world it’ll work when connected to the bike.