My pennyworth
I have fitted a switch to the dip beam circuit, picked up from the large connector in the left hand fairing, up to a switch and back gain, just to interrupt the circuit.
Due to GW's warning about running with no headlights on could cause damage, I now just turn the lights on after I have started the engine.
This means no heavy headlight voltage via the starting system.
This works for me, but heed GW's warnings as they seem quite valid.