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).
Table outlining various switchbox arrangements for different vehicle models.
| Identifier | ExFiles\Box 56\4\ Scan142 | |
| Date | 2nd January 1929 guessed | |
| X5730 SWITCHBOX ARRANGEMENTS. General Diagram. | 20 H.P. Standard | 20 H.P. India or auto switch | Phantom. Standard. | Phantom. expl. | 40/50 H.P. First. | 40/50 H.P. E.F.C. | 40/50 H.P. S.S. Final (O.K. for green lamp sch.) | Auto switch arrgt. ---|---|---|---|---|---|---|---|--- C | - | - | M & C | M & C | M&C | M&C | M&C | M&C I & C. | I & C. | I & C. | M.B&C. | M.B&C. | M.B&C. | M.B&C. | M.B&C. | M.B.&C. I | I | I(&A) | B | M & B | M.{Mr Moon / Mr Moore}&B (&A) | M & B | M & B | B (& A) OFF | OFF | OFF | OFF | OFF | OFF | OFF | OFF | OFF N.B. Red underline indicates the M cases which can be cut out by separate magneto switch. EFC. | ||