How are the instrument panel lights controlled?

The instrument panel lights in the T‑6B are controlled through a knob labeled "INST." This design allows the pilot to easily adjust the brightness of the instrument lighting to improve visibility and reduce glare, especially during night operations or low light conditions. The presence of a physical knob provides tactile feedback, enabling quick adjustments without distracting the pilot from other duties.

While toggle switches and touchscreen interfaces may exist for other controls in the aircraft, they are not the method used for adjusting instrument panel lights. Additionally, automatic adjustments based on ambient light, while useful in some contexts, do not apply to the manual control of the T‑6B’s instrument illumination, which gives pilots direct control over their interface visibility.