Not sure what year Harley dropped the headlight/taillight on/off switch, but my '86 Softy had one and I'd like the same setup for the '12 WG.

I know it'd be easy enough to fit a separate switch to the bars but I want it to operate through the ignition switch like the older models.

Anyone done something similar?

I fitted a small toggle switch at the back of the headlight bucket.
It really can't be seen.
This is a bit ugly, but would work:
https://www.jpcycles.com/product/714-155