Wiring Help

[savage sausage]

ok so now have all my bits to convert AC to DC using a Reg/Rec powering a 2 button switch (HI / Lo) to a LED headlight and Rear tail/brake light.

Using the ducati energia yellow (+) to the yellow of the RR
and red ( - ) to the white of the RR

as i understand the wire from the tail light needs to run to the lightswitch which will be supplied with DC power from the RR.

the power feed from the rear brake switch should also tap into the live from the RR

The problem i am struggling to understand is the light switch and bulb wiring

3 wires from the bulb H / L & (earth)
it has 2 push in & out switches in total 4 wires.
I assume the switch is only live when it is pushed in.

here is a wiring diagram i have drawn to show you if it is correct

also i wiring diagram with the switch i bought