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).
List of electrical components and headlamp fittings with their corresponding part numbers.
| Identifier | ExFiles\Box 169\1\ img050 | |
| Date | 14th April 1930 | |
| (2) RHC{R. H. Coverley - Production Engineer}/WSC{W. S. Cassel}1/MS14.4.30 Ballast Resistance to L.O.P. D.70843. Switchbox to L.O.P. D.71895 incorporating "D" Scheme 315. Switch Box modified to suit Half Charge Scheme. Distribution Board & Cut-out to L.O.P. D.72631. Modified to suit Half Charge Scheme "D" 315. Accessory Distribution Board to L.O.P. D.72214. Magneto Earthing Switch to L.O.P. D.71903. Body Lighting Junction Box to L.O.P. D.50833. Ignition Terminal Box to L.O.P. D.50715. Automatic Switch to L.O.P. D.71810. Disconnecting Box to L.O.P. D.70885. Duplex Push Button Switch to L.O.P. D.71122. Head Lamps & Fittings to L.O.P. D.72679 - N.S.3059. (1) Head Lamps Hot Chromium Plated by R.R. (2) Side Spot Lamp " " " (3) Centre Spot Lamp Chromium plated and supplied by Butlers operated by Court switch on Footboard. (4) Centre Lamp Bracket D.72678 to suit Single Point Radiator Mounting. RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel} | ||