From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Electrical wiring diagram for a motor circuit with a control box.
| Identifier | ExFiles\Box 166\2\ img014 | |
| Date | 15th July 1935 | |
| B, I, +, A, E, B, V, U, A, 15 . 7 . 35 | ||