Just starting my 500 four (1972 K1) restore and needed to source a LH switch assembly from a UK breaker as the top half of the gear with the mirror and clutch lever mounting was missing. My bike is a US import by the way.
Switch gear arrived but now for the confusion, the functions are Hi/Lo beam, PA (I guess this means pass), L/R turn and Horn.
However on my bike the Hi/Lo beam is on the existing RH switch and it looks like on the LH there was only L/R turn and horn.
I am guessing this may be down to differences between USA and UK models (interestingly writing on my bike switchgear (USA) is Red and on this (UK) sourced unit is Green - so maybe another clue there) and I am unsure how to go forward --- I guess options are:-
1) Stick with newly sourced LH switch and just wire in turn and horn but that is going to look a bit stupid having a non function hi/lo beam on LHS
2) Try and source a UK RH assembly if indeed there is a difference in the UK/USA spec, however this will mean hacking the wiring to UK spec also I suspect
I have attached a pic of my newly sourced LH switchgear showing the writing colour and functions.