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).
Suggestion for the operation of the ignition switch to include a warning lamp indicating the key has not been turned off.
| Identifier | ExFiles\Box 166\3\ img011 | |
| Date | 28th December 1932 | |
| -2- Hs{Lord Ernest Hives - Chair}/Wst.3/MA.28.12.32. Cont'd.{John DeLooze - Company Secretary} We would suggest that the first position of the switch should be the accessory circuit master switch along with armature and Summer charge the ignition being operated by turning the key in the lock, coupled to an ignition red warning lamp which would indicate the key not having been turned when leaving the car. Hs{Lord Ernest Hives - Chair}/Wst. | ||