Main dipped headlights not working

Thanks,
Yes I took the switch to bits to understand how it worked.

Black has 12 going in TO the HEADLIGHT SWITCH.

But when the dash mounted headlight switch (which you pull out with your hand) is out all the way, there is 0V on the green.

If I hotwire from the BLACK wire, to the Green wire, my headlights come on. I can then control them with low and high on the dimmer switch on the floor of the car...

The inside of the switch is fine, I'm just in the process of tracing the DK Blue TR wire on the ignition.

Where in the car is the 'To accessory virc breaker (black and red wires)

Thanks