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 comparing two different ignition and starter actuation circuits.
| Identifier | WestWitteringFiles\T\2July1929-December1929\ Scan124 | |
| Date | 13th November 1929 guessed | |
| FIGURE 1. Battery positive Emergency fuse. Ammeter Ignition switch in switchbox Ignition fuse. Ballast resistance Ignition coil. Contact breaker. Oil operated contacts P.B. switch Green lamp. Starter Actuation FIGURE 2. Green lamp Switch mechanically coupled to ignition switch. Oil operated contacts P.B. switch Starter Actuation. Chassis Frame. | ||