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).
List of electrical components, wiring specifications, and other parts with sourcing instructions.
| Identifier | ExFiles\Box 51\2\ Scan030 | |
| Date | 2nd November 1921 guessed | |
| -2- Contd. High tention. Tungsten or nickel Works make nickel. ------ Klaxon horn instruct to use stock. ------ Ammeters from stock. ------ Klaxon horn switch to be ordered. ------ Wire 84/25 S.M. large 70/36 10 amp circuit 40/36 lighting arrange a scheme for wiring There was some of above in stock but in meantime boost WW for a scheme for wiring Battery Have 2 C.A.V.Willard. 2 P & R 2 Lucas batteries. This last doubtful. ------ Rear Brake. (Struck through) Order up 6 sets of lightened aluminium bronze. ------ | ||