Look for switches to the right of the gauges in the cab, and on a panel above the driver's head. That's where most of the auxiliary switches are located in a British "cockpit" cab.
The switch for the central headlight is just to the right of the instrument display panel (it is between the instrument panel and the sander and slow speed switches). For the 2 headlights at either side of the front, you need to select the Route Indicator switch on the panel above the driver window. The tail light switches (a side and b side) are above the driver window. Also, to light the instrument panel, select the instrument light switch on the same panel above the window. Cab light and interior lights can also be selected from this same panel,
