What settings to make shaded same V7 and V5?

[wim (Wim Dekeyser)]

@Steve1

and whilst V5 has one light source

This is the Rhino 5 default for the Shaded display mode:

@Steve1

How does one tell V7 there is one light source in the environment or room?

The same way as you must have done that in Rhino 5.
Rhino Options > View > Display Modes > Shaded → Lighting scheme → Custom lighting → Customize…

-wim