| Description | Date | Identifier | |
| The arrangement of the master switch for body wiring to include a warning light. | 1st Feb 1932 | Box 168b \ 2 img234 | |
| Suggested wiring scheme for main distribution fuses and junction boxes. | 5th Feb 1932 | Box 168b \ 2 img235 | |
| Agreement to implement a red warning light for the master switch on the body wiring. | 24th Feb 1932 | Box 168b \ 2 img236 | |
| Enquiries be made to suppliers about standard L.T. chassis wiring flexible cables. | 9th Feb 1932 | Box 168b \ 2 img237 | |
| Suggestion for chassis wiring to protect batteries against over-discharge using a master switch and warning lamp system. | 1st Feb 1932 | Box 168b \ 2 img238 | |
| Using a diaphragm to protect the starter motor and a subsequent change to the chassis wiring scheme. | 2nd Aug 1932 | Box 168b \ 2 img239 | |
| Wiring diagram for the master control switch and associated components. | 11th Feb 1932 | Box 168b \ 2 img240 | |
| Potential issue with chassis wiring regarding a red lamp's operation independent of the ignition. | 11th Feb 1932 | Box 168b \ 2 img241 | |
| Request for factory costs of the chassis electrical system, wiring, and conduits for the 20/25 and 40/50 chassis. | 25th Feb 1932 | Box 168b \ 2 img242 | |
| Responding to a vague request for the cost of wiring for the 20/25 and 40/50 chassis. | 26th Feb 1932 | Box 168b \ 2 img243 | |
| Request for the total cost of wiring and fittings for specific parts and the separate cost for conduits and fittings only. | 27th Feb 1932 | Box 168b \ 2 img244 | |
| Suggestion for improving production economy by wiring dashboards for 25 HP and Phantom II models away from the chassis. | 1st Mar 1932 | Box 168b \ 2 img245 | |
| Proposal to replace the existing conduit wiring system on 40/50 and 20/25 chassis with a new type of cable. | 7th Mar 1932 | Box 168b \ 2 img246 | |
| Suggestion from Hs/Wst about achieving economy on wiring to reduce costs. | 8th Mar 1932 | Box 168b \ 2 img247 | |
| The wiring for 'Japan III', addressing voltage loss from the switchbox positive feed. | 19th Mar 1932 | Box 168b \ 2 img248 | |
| Volt drop figures and tests for the JAPAN III WIRING system. | 23th Mar 1932 | Box 168b \ 2 img249 | |
| Proposal to remove the ball locking device for the H.T. terminal on the Japan III wiring scheme. | 1st Apr 1932 | Box 168b \ 2 img250 | |
| Japan III wiring scheme and the function of the flexible armoured tube. | 1st Jun 1932 | Box 168b \ 2 img251 | |
| The wiring for 'Japan III', confirming the removal of a superfluous ball clicking device from the coil connection. | 1st Apr 1932 | Box 168b \ 2 img252 | |
| Request to urgently obtain specific quantities and types of Ripoglass cable from Ripaults Ltd. for rewiring a car. | 20th Apr 1932 | Box 168b \ 2 img253 | |
| Proposal to replace steel tubular conduits with flexible metallic tubing for chassis wiring. | 26th Apr 1932 | Box 168b \ 2 img254 | |
| List of wire lengths required per chassis for the 40/50 P. 2. model. | 26th May 1932 | Box 168b \ 2 img255 | |
| Letter regarding the wiring of accessories on 20/25 and 40/50 HP chassis. | 26th Jun 1933 | Box 168b \ 2 img256 | |
| Letter from H.A. Douglas MFG. Co. to Mr. H. Royce in response to an enquiry about snap terminals and swedging machines. | 17th Aug 1932 | Box 168b \ 2 img257 | |
| Advertisement and data proof for snap terminals and various electrical switches from H. A. Douglas Mfg. Co. | 17th Aug 1932 | Box 168b \ 2 img258 | |
| Advertisement for H. A. Douglas Mfg. Co. electrical components, including snap terminals and various switches. | 17th Aug 1932 | Box 168b \ 2 img259 | |
| Advertisement for snap terminals, junction blocks, and fuse blocks from an external supplier. | 17th Aug 1932 | Box 168b \ 2 img260 | |
| Advertisement for H.A. Douglas Mfg. Co.'s snap terminals for electrical contacts. | 17th Aug 1932 | Box 168b \ 2 img261 | |
| Sheet illustrating five different types of electrical contact spring chambers and fuse clips. | 17th Aug 1932 | Box 168b \ 2 img262 | |
| Douglas Snap Terminals and their applications in electrical connections. | 17th Aug 1932 | Box 168b \ 2 img263 | |
| Advertising document for H.A. Douglas Mfg. Co. electrical snap terminals and their applications. | 23th Dec 1932 | Box 168b \ 2 img264 | |
| Blueprint for a new long type distribution board and switchbox design. | 23th Dec 1932 | Box 168b \ 2 img265 | |
| Order for 50 ft. of copper bar as per an attached blueprint. | 30th Aug 1934 | Box 168b \ 2 img266 | |
| Drawing specifying the dimensions and material for a high conductivity annealed copper wire. | 30th Jun 1934 | Box 168b \ 2 img267 | |
| Requesting an order for two pounds of 28 S.W.G. D.C.C. copper wire. | 3rd Jul 1934 | Box 168b \ 2 img268 | |
| Clarifying the exact specification for an order of H.T. Cable for testing on an experimental chassis. | 30th Oct 1934 | Box 168b \ 2 img269 | |
| Request to manufacture 50 small wiring ferrules to drawing EL.50. | 12th Nov 1934 | Box 168b \ 2 img270 | |
| Letter requesting the production of a special screened three-core cable for experimental ignition equipment. | 29th Nov 1934 | Box 168b \ 2 img271 | |
| To Mr. Jaques with comments on the specification for the bonding and screening of ignition cables. | 30th Nov 1934 | Box 168b \ 2 img272 | |
| Letter from British Insulated Cables Ltd. offering a specification for a 3-core L.T. cable. | 4th Dec 1934 | Box 168b \ 2 img273 | |
| Ordering a 100 ft. sample of British Insulated material for testing. | 21th Dec 1934 | Box 168b \ 2 img274 | |
| From EJJ requesting tests to be performed on three numbered cable samples. | 4th Apr 1935 | Box 168b \ 2 img275 | |
| Letter from British Insulated Cables Ltd. arranging a meeting. | 10th Apr 1935 | Box 168b \ 2 img276 | |
| Letter to Mr. E.A. Bayles of British Insulated Cables, Ltd., confirming a meeting date. | 11th Apr 1935 | Box 168b \ 2 img277 | |
| Examination and electrical test report for sample cables. | 15th Apr 1935 | Box 168b \ 2 img278 | |
| Conclusion on the suitability of three different waxed cotton braiding samples for use on voltages up to 200. | 15th Apr 1935 | Box 168b \ 2 img279 | |
| Letter from British Insulated Cables Ltd. confirming a works visit. | 15th Apr 1935 | Box 168b \ 2 img280 | |
| Order for 100 ft. of 4 core cable from the British Insulated Cables Ltd. | 7th Jun 1935 | Box 168b \ 2 img281 | |
| Letter to The Concordia Electric Wire Co. Ltd. requesting samples of enamelled paper covered copper wire for testing. | 13th Aug 1935 | Box 168b \ 2 img282 | |
| Internal request to order 10 lbs of enamelled single paper covered copper wire. | 17th Aug 1935 | Box 168b \ 2 img283 | |
| Internal request to order different gauges of copper wire from Messrs. Concordia. | 15th Aug 1935 | Box 168b \ 2 img284 | |
| Order for 4 lbs of S.W.G. D.S.C. copper wire. | 7th Sep 1935 | Box 168b \ 2 img285 | |
| Request to charge a private account for twin lighting flex taken from stock for personal use. | 3rd Oct 1935 | Box 168b \ 2 img286 | |
| Internal request to place an order for eureka resistance wire from the London Electric Wire Co. | 15th Nov 1935 | Box 168b \ 2 img287 | |
| The replacement of a single inaccessible cable clip with two more accessible ones on the camshaft drive. | 4th Jan 1936 | Box 168b \ 2 img288 | |
| Request to The Gabriel Manufacturing Co. for a sample of Armored Titeflex Tubing. | 23th Mar 1936 | Box 168b \ 2 img289 | |
| Requesting an order for special ignition cable from British Insulated Cables Ltd. | 23th Mar 1936 | Box 168b \ 2 img290 | |
| Contents note from Gabriel Manufacturing Co. detailing an order for Titeflex flexible hoses. | 25th Mar 1930 | Box 168b \ 2 img291 | |
| Letter from Gabriel Manufacturing Co. regarding Titeflex flexible tubing and samples for radio shielding ignition harnesses. | 25th Mar 1936 | Box 168b \ 2 img292 | |
| Inquiry to The Gabriel Manufacturing Co. about producing custom aluminium tubing braided with phosphor bronze wire. | 26th Mar 1936 | Box 168b \ 2 img293 | |
| Letter from Gabriel Manufacturing Co. regarding the production of Titeflex flexible metallic hose. | 30th Mar 1936 | Box 168b \ 2 img294 | |
| Correspondence from Gabriel Manufacturing Co. regarding the development of Titeflex flexible hose for ignition screening. | 2nd Apr 1936 | Box 168b \ 2 img295 | |
| Letter from Gabriel Manufacturing Co. discussing a sample of Titeflex braided hose and a modified nipple. | 6th Apr 1936 | Box 168b \ 2 img296 | |
| Letter to The Gabriel Manufacturing Co. ordering a sample of tinned phosphor bronze braiding wire and small ferrules for an engine trial. | 9th Apr 1936 | Box 168b \ 2 img297 | |
| Request to place an order with Gabriel Manufacturing Co. for Titeflex bore, wire, and nipples. | 9th Apr 1936 | Box 168b \ 2 img298 | |
| Acknowledgement of order 15162 for specially braided Titeflex hose with a 7-10 day production time. | 17th Apr 1936 | Box 168b \ 2 img299 | |
| Letter from The Concordia Electric Wire Co. Ltd. enclosing a brochure on paper covered enamelled wire. | 4th Jun 1936 | Box 168b \ 2 img300 | |
| Internal request to place an order for small ferrules from Messrs. Tite Flex Ltd. | 6th Jun 1936 | Box 168b \ 2 img301 | |
| Letter from a silk merchant confirming a sample order for artificial silk sleeving. | 19th Jun 1936 | Box 168b \ 2 img302 | |
| Letter to Johnson & Phillips, Ltd. regarding the testing of and a request for a quote for Ozone proof cable. | 7th Aug 1936 | Box 168b \ 2 img303 | |
| Urgent request to order a sample of special ozone-resisting ignition cable from Johnson & Philips Ltd. for testing. | 14th Aug 1936 | Box 168b \ 2 img304 | |
| Sample of 'Concordia' copper wire and the decision to remain with current suppliers. | 19th Aug 1926 | Box 168b \ 2 img305 | |
| Requesting the dispatch of a sample ignition cable and a set of contact breakers to Mr. E.A. Watson of Joseph Lucas Ltd. | 22th Aug 1936 | Box 168b \ 2 img306 | |
| Letter to The Mond Nickel Company Ltd. regarding the supply of a wire with the same alloy composition as 'Chromel'. | 3rd Sep 1936 | Box 168b \ 2 img307 | |
| Letter from Johnson & Phillips Ltd. explaining a short delivery of cable due to a manufacturing mishap. | 1st Oct 1936 | Box 168b \ 2 img308 | |
| Order for Titeflex tubing from Gabriel Manufacturing Co. Ltd. | 23th Sep 1936 | Box 168b \ 2 img309 | |
| Requesting a wiring modification for the Cam Bevel Test Rig to keep the battery charged during endurance runs. | 12th Oct 1936 | Box 168b \ 2 img310 | |
| Requesting the arrangement of wiring for the Cam Bevel Test Rig. | 13th Oct 1936 | Box 168b \ 2 img311 | |
| Order and subsequent invoices for Titeflex all Metal Double braided Hose. | 13th Oct 1936 | Box 168b \ 2 img312 | |
| Telephone order for Titeflex Metal Double Braided Hose and the return of an incorrect quantity. | 14th Oct 1936 | Box 168b \ 2 img313 | |
| Properties and chemical resistance of 'Duprene' compound, a synthetic rubber alternative. | 22th Oct 1936 | Box 168b \ 2 img314 | |
| Technical memorandum discussing the properties and potential applications of the synthetic rubber 'Duprene'. | 22th Oct 1936 | Box 168b \ 2 img315 | |
| Letter to British Insulated Cables Ltd. arranging a meeting to discuss cable specifications with other manufacturers. | 3rd Feb 1937 | Box 168b \ 2 img316 | |
| Letter from British Insulated Cables Ltd. arranging a meeting with H.E. West, declining a semi-official meeting with other parties. | 8th Feb 1937 | Box 168b \ 2 img317 | |
| Letter to British Insulated Cables Ltd. declining a conference unless specific differences in cable conception can be discussed. | 9th Feb 1937 | Box 168b \ 2 img318 | |
| Letter from British Insulated Cables Ltd. regarding the specification and quotation for H.T. cable for a Marine Engine. | 2nd Aug 1940 | Box 168b \ 2 img319 | |
| Request to obtain H.T. Cable from British Insulated Cables Ltd., Prescot. | 7th Aug 1940 | Box 168b \ 2 img320 | |
| Faulty tail-stop reverse light unit and a worn-out ignition contact. | 28th May 1941 | Box 168b \ 2 img321 | |
| Replacement of low-tension wires and other electrical components due to faults on car S.E.V. | 13th May 1941 | Box 168b \ 2 img322 | |
| The replacement of a faulty switchbox and swapping of ignition coils. | 13th May 1941 | Box 168b \ 2 img323 | |
| Battery comprised of two 6-volt units. | 15th Sep 1926 | Box 168b \ 3 img001 | |
| Scheme 2266/7/8 for mounting a battery in a frame, discussing options from Dagenite and Exide. | 15th Sep 1926 | Box 168b \ 3 img002 | |
| Requesting an update on the supply of two 6-volt battery units for EAC.7 from suppliers Peto & Radford and The Chloride Co. | 18th Oct 1926 | Box 168b \ 3 img003 | |
| Decisions on battery development and expenditure for moulds. | 20th Oct 1926 | Box 168b \ 3 img004 | |
| Summary of correspondence with battery suppliers concerning components for experiments. | 5th Nov 1926 | Box 168b \ 3 img005 | |
| Letter excerpt requesting full particulars to prepare a quotation for at least half of the recipient's total requirements. | 5th Nov 1926 | Box 168b \ 3 img006 | |
| Proposed divided battery design for the Phantom model, referencing several schemes. | 30th Apr 1927 | Box 168b \ 3 img007 | |
| Progress and urgency of designing a battery mounted within the Phantom's frame. | 9th Sep 1927 | Box 168b \ 3 img008 | |
| Suggesting a change in battery configuration to simplify weight distribution and improve reliability. | 14th Nov 1927 | Box 168b \ 3 img009 | |
| Release of standard batteries for the Phantom F.2 series, and a disagreement on testing. | 9th Dec 1927 | Box 168b \ 3 img010 | |
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