or the record, here’s the lamp driver circuit for the 360 control panel – this is one of 18 squeezed onto a single piece of Veroboard.

Each Darlington pair Q1 drives 10 randomly located lamps on the control panel wired in parallel.

U1 input high = lamps OFF, U1 input low = lamps ON

S1 is the Emergency pull button on the top right of the control panel.