Are you allowed to combine the full beam headlights with auxiliary lights?

Yes, when you are allowed to use full beam headlights you may also use auxiliary lights. They must never be combined with any other lights however.

The most common auxiliary lights are cornering lights, which improve visibility in curves, and long-range lights, which improve visibility over longer distances.

Auxiliary lights are usually connected to the same circuit as the full beam headlights, so that they turn off automatically when you turn of the full beam headlights.