Wiring diagram for a master control switch with associated fuses and a warning lamp.
| Identifier | ExFiles\Box 65\2\ scan0280 | |
| Date | 1st January 1932 | |
| + MASTER CONTROL SWITCH FUSES. TO JUNCTION BOXES. POSITIVE SUPPLY FROM IGNITION SWITCH CONTACTS OPERATED EITHER BY CUT-OUT OR OIL PRESSURE WARNING LAMP FUSE IGNITION AM '32 | ||
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).