I have a 1980 GL1100 Standard with a Vetter/Windjammer fairing. I have had this issue since I bought it - when if I switch to Hi-beam, the headlight goes Lo-beam and vice versa.
I have kinda gotten used to it - the only thing that bugs me is the blue Hi-beam indicator staring in my face at night. Ya - I can put tape on it, just like I did for the always-on neutral light - but a fix could be handy.
Is there some easy solution to diagnose and fix?
Thats the same thing that mine does only its a 1500SE 1997 main beam warning lamp is on on dip and off on main