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 wiring diagram for the vehicle's headlamp and spotlight control system.
| Identifier | ExFiles\Box 167\1\ img093 | |
| Date | 26th January 1937 guessed | |
| L HEAD Dipped simply to cut R HEAD Dipped 150 yds to left left spot Right spot heads & spots 3 Switches on dashboard readily accessible from driving position Foot. Switch to left of Clutch for changing Head & Spots & vice versa Dipping switch if necessary in centre of steering column Headlamp Switch projecting from steering column to left of steering wheel column Pos. 1 Heads on 2 Heads Dipped 3 Right only (Dipped?) 4 Left only (Dipped?) HEAD SIDES ETC Main Switchboard Switch | ||