Hi guys, my memory isn't good enough to remember back to '76 when I had my first 550 F, I can't remember how the std, mirrors were fastened on. I seem to recall the left (or both) was a left hand thread.
My current 550F2 has a clamp around the handlebar with the mirror attached !! It doesn't look OEM.
Could you post up pictures of both sides where mirrors attach please.
Also the right hand switchgear, I think should only show lights ON/OFF and not HIGH/LOW.
Pictures speak a thousand words.
Cheers.