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).
Wiring diagram for a Super Energy Coil.
| Identifier | ExFiles\Box 164\5\ img415 | |
| Date | 2nd March 1939 | |
| SUPER ENERGY COIL TH 6/1 AND TH 12/1 15 16 1 4 STARTER 30 + 31 CORRECT INCORRECT BOSCH, LIMITED. LONDON 2.3.39. O/110 | ||