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 for the connections of a green lamp relay switch for battery charge control.
| Identifier | WestWitteringFiles\S\March1928-May1928\ Scan147 | |
| Date | 22th March 1928 | |
| CONNECTIONS OF RR GREEN LAMP RELAY SWITCH FOR BATTERY CHARGE CONTROL THROUGH GREEN LAMP TO EARTH To EARTH RESISTANCE FINISH COPPER SUPPLY FROM AMMETER SIDE OF MAIN BATTERY FUSE FROM DIS. BOX TERMINAL B. ROYCE, LIMITED PRINT ROOM 1 MAY 1928 22/3/28 Alin. | ||