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).
The functionality of a master switch for body wiring, specifically in relation to an electric heater and the ignition circuit.
| Identifier | ExFiles\Box 168b\2\ img233 | |
| Date | 5th February 1932 | |
| X6082 S/W. Hs{Lord Ernest Hives - Chair}/Wst. (c. to BX, Sg{Arthur F. Sidgreaves - MD}, Wor{Arthur Wormald - General Works Manager}, R, DA{Bernard Day - Chassis Design}, Hn{F. C. Honeyman - Retail orders}) Gx6/KWM.2.32. X6082 X7741D. Re - BODY WIRING. Reference Hs{Lord Ernest Hives - Chair}/Wst.2/MAL.2.32. It has been suggested here that the master switch referred to would only be wanted in connection with a car fitted with an electric heater, as such fittings as lights, cigar-lighters, windscreen wipers, etc., are either obvious or intermittent. Possibly you intended to make this master switch safeguard the ignition circuit also instead of introducing the red warning light when the switch is 'on' with the engine stationary. Cx.{Major Len W. Cox - Advertising Manager} WST RECEIVED 5 FEB 1932 | ||