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).
Troubleshooting guide for battery ignition and fuse failures, with instructions for switchbox, junction box, and ammeter connections.
| Identifier | ExFiles\Box 26\2\ Scan127 | |
| Date | 19th July 1917 | |
| H.R. 199 (250T) (SD676 19-7-17) M/P180865 -13- Contd. Failure of operation of battery ignition and Klaxon, without failure of starter, indicates melting of positive fuse, but the symptoms of failure of the negative fuse include the failure of electrical operation of starter. The failure of either of these fuses will not interfere with the lighting or charging. The spare connections on the bars permit of the connection of additional apparatus, e.g. body lighting but the resulting additional drain on the system should be carefully taken into account and provided for by extra charging in the manner explained under "Care of Battery" below. Such additional apparatus will, of course, be put out of action by the melting of either fuse SWITCHBOX; JUNCTION BOX AND AMMETER CONNECTIONS. If at any time it be necessary to disconnect the wires from the switchbox, junction box or ammeter terminals, great care should be taken to ensure their correct replacement. Further, it is very important that the wires coming from the switchbox be suitably supported inside the scuttle to prevent the connections being strained. Should the ammeter connections be reversed in error, the charge and discharge indications of the ammeter will be reversed. | ||