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).
Hand-drawn block diagram showing a vehicle's electrical distribution system.
| Identifier | ExFiles\Box 180\M2\M2.3\ img010 | |
| Date | 19th February 1920 | |
| 4 Earthed or non-earthed R.R. switch-box and Ammeter. New distribution board. Lights. Smith cut-out Smith Dynamo. Various circuits. Battery. Motor. R.R. 238A. (100 T.) S. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 648. 19-2-20 G 2618 | ||