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).
Wiring diagram for the connections of R.R. Auto-Switch Units.
| Identifier | ExFiles\Box 43\1\ Scan032 | |
| Date | 4th February 1928 | |
| TO DYNAMO TERMINAL C. TO EARTH. FROM Dis. Box TERMINAL C FROM Dis. Box TERMINAL B. CONNECTIONS OF R.R. AUTO-SWITCH UNITS. F.J.A 4.2.28 | ||