| Description | Date | Identifier | |
| Specification chart for various types of electrical wire. | 1st Jul 1920 | Box 168b \ 2 img034 | |
| Gridded table of numerical data and calculations. | 19th Jul 1920 | Box 168b \ 2 img035 | |
| Requesting the Pattern Shop to create two specimen boxes for chassis wiring. | 19th Jul 1920 | Box 168b \ 2 img036 | |
| Request for specimens of wire, with and without ferflex armouring, to be made at Glovers. | 13th May 1920 | Box 168b \ 2 img037 | |
| Extract regarding the earthed wiring scheme and battery placement on the Delage Car. | 23th Jul 1920 | Box 168b \ 2 img038 | |
| Supply issues and wiring configuration for a twelve-volt lighting system. | 26th Jul 1920 | Box 168b \ 2 img039 | |
| The dispatch of a case of wire specimens and their specifications. | 25th Aug 1920 | Box 168b \ 2 img040 | |
| Merits of six-volt versus twelve-volt electrical systems following Mr. Bijur's visit to the works. | 26th Aug 1920 | Box 168b \ 2 img041 | |
| The merits of a twelve-volt electrical system versus a six-volt system. | 26th Aug 1920 | Box 168b \ 2 img042 | |
| Instruction sheet detailing voltage drop and resistance tests on new standard Glover wiring. | 18th Mar 1921 | Box 168b \ 2 img043 | |
| Graph plotting terminal volts at the motor with various batteries and starter cables on an RR car. | 8th Jun 1921 | Box 168b \ 2 img044 | |
| Letter enclosing and discussing test results for various batteries and starter motors. | 8th Jun 1921 | Box 168b \ 2 img045 | |
| Comparing the performance of Westinghouse and Bijur starting motors on the 4-EX model. | 11th Aug 1920 | Box 168b \ 2 img046 | |
| Analysis of vehicle starting performance, comparing different batteries and cables. | 11th Aug 1930 | Box 168b \ 2 img047 | |
| Comparison of Exide and Willard batteries and specifications for starter cables. | 12th Aug 1920 | Box 168b \ 2 img048 | |
| Modifications to battery position, starter cable, and tool storage for American and English cars. | 11th Aug 1920 | Box 168b \ 2 img049 | |
| Letter discussing starter motor brake tests and comparing performance curves. | 17th Jul 1921 | Box 168b \ 2 img050 | |
| Performance of various batteries and starter cables, particularly under winter conditions. | 11th Feb 1921 | Box 168b \ 2 img051 | |
| Cold-weather starting performance, proposing refrigerator tests to analyze power loss and oil viscosity effects. | 11th May 1920 | Box 168b \ 2 img052 | |
| Issues with battery cable routing and recommendations for correct installation. | 18th Jun 1921 | Box 168b \ 2 img053 | |
| Note on the improper arrangement of battery cables and a disagreement with the coachbuilders' current practice. | 15th Jun 1921 | Box 168b \ 2 img054 | |
| Letter forwarding an inquiry from General Electric about standardizing single versus double contact base lamps for car wiring. | 3rd Aug 1921 | Box 168b \ 2 img055 | |
| The merits of two-wire versus single-wire electrical systems. | 18th Aug 1921 | Box 168b \ 2 img056 | |
| Letter to the Managing Director discussing the advantages of a single-wire earthed electrical system and a new distribution board. | 18th Aug 1921 | Box 168b \ 2 img057 | |
| Letter regarding the future difficulty of obtaining bulbs for old types of cars. | 18th Aug 1921 | Box 168b \ 2 img058 | |
| Analysis of the electrical resistance in a standard starter motor system, focusing on battery and cable performance. | 8th Sep 1921 | Box 168b \ 2 img059 | |
| Extract listing and assessing various battery models, noting the poor performance of a U.S.A. model. | 1st Sep 1921 | Box 168b \ 2 img060 | |
| Starter motor performance in relation to battery characteristics, referencing notes from U.S.A. | 13th Sep 1921 | Box 168b \ 2 img061 | |
| Defining the limit for a battery's virtual internal resistance required for operating the starter motor. | 13th Sep 1921 | Box 168b \ 2 img062 | |
| Alterations to high-rate battery discharge testing procedures and standards. | 13th Sep 1921 | Box 168b \ 2 img063 | |
| Technical discussion on battery and starter motor performance, referencing previous reports and tests. | 13th Sep 1921 | Box 168b \ 2 img064 | |
| Report discussing starter motor and battery performance, comparing systems and components. | 13th Sep 1921 | Box 168b \ 2 img065 | |
| Continued memorandum discussing starter motor brake tests and the relative merits of plotting results on a torque versus an ampere base. | 13th Sep 1921 | Box 168b \ 2 img066 | |
| Comparative tests of an American standard and an R.R. standard starter motor cable on a 4EX chassis. | 7th Oct 1921 | Box 168b \ 2 img067 | |
| Wiring specifications and cable ordering for the Goshawk earthed wiring scheme. | 13th Jan 1922 | Box 168b \ 2 img068 | |
| Color specifications for various models and referencing a past quotation. | 13th Jan 1922 | Box 168b \ 2 img069 | |
| Specification of cables for the R.R. Goshawk wiring system. | 13th Jan 1922 | Box 168b \ 2 img070 | |
| Proposed standardisation of the 40/50 starter motor components for a livelier start. | 9th Feb 1923 | Box 168b \ 2 img071 | |
| Letter proposing a patented system for identifying terminal wires using marked rubber sleeves. | 18th Mar 1922 | Box 168b \ 2 img072 | |
| Letter declining interest in a patented system for the identification of terminal wires. | 22th Mar 1922 | Box 168b \ 2 img073 | |
| Listing specifications for various types of electric cable for 40/50 or Goshawk II models. | 28th Jun 1922 | Box 168b \ 2 img074 | |
| Specification for a metal braided, single-core electric cable. | 28th Jun 1922 | Box 168b \ 2 img075 | |
| Specification sheet for 600 Megohm Grade, metal braided electric cable. | 28th Jun 1922 | Box 168b \ 2 img076 | |
| Specification sheet for a single core, 600 Megohm grade electric cable. | 27th Sep 1922 | Box 168b \ 2 img077 | |
| Specification for 600 Megohm Grade, Metal Braided, Twin Core Electric Cable. | 27th Sep 1922 | Box 168b \ 2 img078 | |
| Specification for a twin core, metal braided electric cable. | 27th Sep 1922 | Box 168b \ 2 img079 | |
| Specification sheet for a 3-core, metal-braided electric cable. | 29th Aug 1938 | Box 168b \ 2 img080 | |
| Specification sheet for a 4 core, metal braided electric cable. | 29th Aug 1938 | Box 168b \ 2 img081 | |
| Specification for a 600 Megohm Grade electric cable. | 23th Oct 1917 | Box 168b \ 2 img082 | |
| Material and construction specification for a single core electric cable. | 23th Oct 1917 | Box 168b \ 2 img083 | |
| Material specification for single core electric cable. | 13th Oct 1922 | Box 168b \ 2 img084 | |
| Specification sheet for a single core electric cable. | 13th Oct 1922 | Box 168b \ 2 img085 | |
| Specification sheet for electric cable, specifically workshop twin flex. | 30th Jun 1920 | Box 168b \ 2 img086 | |
| Revisions to electric cable specifications for the 40/50 Chassis and Goshawk II models. | 1st Dec 1922 | Box 168b \ 2 img087 | |
| Specification for Ferflex Braided, single-core electric cable. | 30th Nov 1922 | Box 168b \ 2 img088 | |
| Specification sheet for a single core, braided electric cable. | 30th Mar 1933 | Box 168b \ 2 img089 | |
| Specification sheet for an Electric Cable, 600 Megohm Grade. | 30th Nov 1919 | Box 168b \ 2 img090 | |
| Specification sheet for 600 Megohm Grade electric cable. | 30th Nov 1922 | Box 168b \ 2 img091 | |
| Specification for Electric Cable, 600 Megohm Grade, with Ferflex Braiding. | 30th Nov 1922 | Box 168b \ 2 img092 | |
| Specification for a 3 Core Electric Cable, 600 Megohm Grade. | 30th Nov 1922 | Box 168b \ 2 img093 | |
| Specification sheet for a 4-core, Ferflex braided electric cable. | 30th Nov 1927 | Box 168b \ 2 img094 | |
| Specification sheet for a single core electric cable. | 30th Nov 1922 | Box 168b \ 2 img095 | |
| Specification sheet for a single core electric cable. | 30th Nov 1922 | Box 168b \ 2 img096 | |
| Specification sheet for a single core electric cable. | 30th Nov 1922 | Box 168b \ 2 img097 | |
| Specification for Electric Cable, Workshop Twin Flex. | 30th Nov 1922 | Box 168b \ 2 img098 | |
| Specification for Ferflex Braided electric cable. | 14th Sep 1923 | Box 168b \ 2 img099 | |
| Specification for Ferflex braided electric cable. | 14th Sep 1923 | Box 168b \ 2 img100 | |
| Specification for Electric Cable, 600 megohm grade. | 14th Sep 1923 | Box 168b \ 2 img101 | |
| Specification for Ferflex Braided electric cable. | 14th Sep 1923 | Box 168b \ 2 img102 | |
| Specification for Ferflex Braided electric cable. | 14th Sep 1923 | Box 168b \ 2 img103 | |
| Specification for Ferflex braided electric cable. | 14th Sep 1923 | Box 168b \ 2 img104 | |
| Specification for Ferflex Braided electric cable. | 14th Sep 1923 | Box 168b \ 2 img105 | |
| Specification for a single core electric cable. | 14th Oct 1923 | Box 168b \ 2 img106 | |
| Specification for a single core electric cable. | 14th Oct 1923 | Box 168b \ 2 img107 | |
| Specification for a single core electric cable. | 14th Oct 1923 | Box 168b \ 2 img108 | |
| Specification for Workshop Twin Flex electric cable. | 14th Oct 1923 | Box 168b \ 2 img109 | |
| Specification sheet for Ferflex braided, twin-core electric cable. | 14th Sep 1923 | Box 168b \ 2 img110 | |
| Specification sheet for two types of Ferflex braided electrical cable. | 14th Sep 1923 | Box 168b \ 2 img111 | |
| Specification sheet for single and twin core electric cables. | 14th Sep 1923 | Box 168b \ 2 img112 | |
| Specifications for two types of electric cables, numbers 254 and 255. | 14th Sep 1923 | Box 168b \ 2 img113 | |
| Specification for Ferflex Braided electric cable. | 14th Sep 1923 | Box 168b \ 2 img114 | |
| Specification for a single core electric cable. | 14th Oct 1923 | Box 168b \ 2 img115 | |
| Specifications for Workshop Twin Flex and Ferflex Braided electric cables. | 14th Oct 1923 | Box 168b \ 2 img116 | |
| Forwarding a set of revised printed specifications for electric cable used in chassis production. | 23th Nov 1923 | Box 168b \ 2 img117 | |
| Specification for a single core electric cable. | 25th Apr 1925 | Box 168b \ 2 img118 | |
| Requesting an inspection of a wiring tube on chassis EAC.8 suspected of obstructing lubrication points. | 10th Jun 1926 | Box 168b \ 2 img119 | |
| Requesting the examination of a blueprint for the E.A.C.7. Chassis wiring diagram. | 1st Jul 1926 | Box 168b \ 2 img120 | |
| Revisions to the EAC.7 wiring diagram, focusing on switch terminology and earthing connections. | 3rd Jul 1926 | Box 168b \ 2 img121 | |
| Wiring change for the silent starter push button switch. | 6th Jul 1926 | Box 168b \ 2 img122 | |
| Alterations to the wiring diagram blueprint for the E.A.C.7 chassis, specifically discussing earthing connections. | 12th Aug 1926 | Box 168b \ 2 img123 | |
| Wiring, agreeing that it is not necessary to show the earthing connections. | 13th Aug 1926 | Box 168b \ 2 img124 | |
| Attached report on tests conducted on Ediswan cables. | 15th Nov 1926 | Box 168b \ 2 img125 | |
| EAC.7 ignition wire fittings, discussing wire routing and proposed modifications to the induction manifold. | 20th Dec 1926 | Box 168b \ 2 img126 | |
| Notification of alterations to the Phantom chassis wiring diagram for 'C-2-B' series onwards. | 11th Jan 1927 | Box 168b \ 2 img127 | |
| Tests conducted on electric cables, comparing single core and twin flex samples. | 11th Jan 1927 | Box 168b \ 2 img128 | |
| Test report comparing the breakdown voltage of twin flex and single core electric cables against the company's standard. | 11th Jan 1927 | Box 168b \ 2 img129 | |
| Testing of six workshop cable samples received from Messrs. Wm. Geipel & Company. | 11th Jan 1927 | Box 168b \ 2 img130 | |
| Report on electric cables and the handover of samples. | 12th Jan 1927 | Box 168b \ 2 img131 | |
| Requesting tests on cable and wire samples supplied by Messrs. Wm. Geipel & Co Ltd. | 15th Dec 1926 | Box 168b \ 2 img132 | |
| Proposed alterations to the EAC undershields and a decision to halt work on the EAC.7 engine for a redesign. | 31th May 1927 | Box 168b \ 2 img133 | |
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