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).
Diagrams showing various methods for routing and securing LT and HT wiring.
| Identifier | Morton\M11\ img252 | |
| Date | 1st March 1911 | |
| BALLAST ONLY WIRING, LT WIRE, LT WIRE PASSING THRU' TROUGH, SECTION THRU' WOOD TROUGH HELD ON WITH SCREWS., SHEET METAL, HARD WOOD BLOCKS, SHEET METAL, HT WIRES, ORIGINAL BRACKET (TENNIS RACQUET), (OC 3/11) | ||