Showing the switch in the 'main beam' position, 'dip' and 'flash' contacts both open. This switch is from a UK 1973 model.

Showing the switch in the 'dip beam' position, 'main' and 'flash' contacts open.

Showing the switch in the 'flash' position, dipped beam contact still closed (but the spring contact pushed further than before) 'main' contact still open.

Showing the switch in the 'dip beam' position with the contacts labelled as to which colour wire goes where.

A general view showing the plastic springs (and indicator/turn-signal auto-cancel fingers) on the switch body. The 'Dip'/'Main' snap-action spring gives the positive switching action between dip and main positions. The 'Flash' spring gives a positive return to 'Dip' from 'Flash'.

Switch in the 'main beam' position, the flasher return spring clear of the switch body.

Switch in the 'dipped beam' position, the flasher return spring just touching the switch body.

Switch in the 'flash' position, the flasher return and dip/main snap-action springs under tension.