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 distribution board and cutout tests on a 20 HP engine.
| Identifier | ExFiles\Box 57\1\ Scan005 | |
| Date | 3rd October 1928 guessed | |
| CONNECTIONS FOR RR. 20 HP. DISTRIBUTION BOARD AND CUTOUT TESTS. D- F+ D+ + V B A | ||