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).
Instructions on the wiring for the steering column switch, detailing the colour coding for terminals.
| Identifier | ExFiles\Box 26\2\ Scan133 | |
| Date | 19th July 1917 guessed | |
| -19- Contd. STEERING COLUMN SWITCH. The wires in connection with the three terminals of the steering column switch are correspondingly marked by meand of coloured bands, to the terminals themselves, black representating the magneto earthing wire and terminal, and red, the two battery ignition wires and terminals. The latter are mutually interchangeable without effect but must not be interchanged with the magneto wire. Contd. | ||