Diagram of the P.P. Goshawk electrical system.
| Identifier | ExFiles\Box 45\3\ Scan185 | |
| Date | 9th March 1933 | |
| Y4075 SWITCHBOX Head on off Side off on 1 2 3 4 5 6 DYNAMO + - +F -F A B D- D+ F+ STARTER MOTOR + - DIAGRAM OF P.P. GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) ELECTRICAL SYSTEM Ammeter A CUT OUT DISTRIBUTION BOARD Ignition Head Lamps Side & Tail Lamps Starter Switch Earthed on Chassis Battery + E7e 9/3/33 | ||
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).