| Description | Date | Identifier | |
| The indications of a dynamo-battery circuit failure and the potential for damage. | 30th Mar 1928 | Box 60 \ 3 Scan047 | |
| Use of parts from an auto charge control switch and requesting a new unit. | 30th Mar 1928 | Box 60 \ 3 Scan048 | |
| Notes on the wiring and operation of an auto switch and green lamp switch. | 17th Apr 1928 | Box 60 \ 3 Scan049 | |
| Failure of a new charge control device and the subsequent decision to use a simpler indicator type instead. | 21th Apr 1928 | Box 60 \ 3 Scan050 | |
| The second page of a document concluding a point about a failure and the necessity of knowledge and discipline. | 1st May 1928 | Box 60 \ 3 Scan051 | |
| Specifications and testing of a green lamp switch unit. | 1st May 1928 | Box 60 \ 3 Scan052 | |
| The resistance and operating voltage characteristics of the Green Lamp Switch H. | 30th Apr 1928 | Box 60 \ 3 Scan053 | |
| Wiring diagram for a relay switch used for battery charge control, connected to a green indicator lamp. | 28th Mar 1928 | Box 60 \ 3 Scan054 | |
| Table of finally approved windings for a green lamp switch and auto charge control switch. | 12th Jun 1928 | Box 60 \ 3 Scan055 | |
| Redesign of a magnetic cutout for a Green Light Charge Scheme due to issues with road roughness. | 15th Jun 1928 | Box 60 \ 3 Scan056 | |
| Battery charge indicator switch and a request to create a drawing for a distribution board. | 29th Jun 1928 | Box 60 \ 3 Scan057 | |
| Revised and color-coded Phantom wiring diagram for inclusion in the instruction book. | 29th Jun 1928 | Box 60 \ 3 Scan058 | |
| Series of comments and proposed corrections for a Phantom wiring diagram. | 6th Jul 1928 | Box 60 \ 3 Scan059 | |
| Corrections to electrical wiring diagrams for the ignition coil and battery earthing. | 6th Jul 1928 | Box 60 \ 3 Scan060 | |
| Query regarding the placement of a field fuse in a new mould for the 'Green Light Scheme'. | 9th Jul 1928 | Box 60 \ 3 Scan061 | |
| Specification table for Green Lamp Switch Units detailing windings and location. | 9th Jul 1928 | Box 60 \ 3 Scan062 | |
| Blueprint for a new distribution board incorporating a battery charge indicator switch. | 11th Jul 1928 | Box 60 \ 3 Scan063 | |
| Road tests conducted on green lamp and auto switch schemes. | 13th Jul 1928 | Box 60 \ 3 Scan064 | |
| Test report on the operation of 'Auto switch B' including operating voltages, battery performance, and adjustments made due to road conditions. | 16th Jul 1928 | Box 60 \ 3 Scan065 | |
| Revisions to a Phantom wiring diagram, specifically the green light connection and line drawing conventions. | 16th Jul 1928 | Box 60 \ 3 Scan066 | |
| Clarifying the operation and wiring of a green lamp, its coil, and relay switch in relation to the charging switch. | 8th Jul 1928 | Box 60 \ 3 Scan067 | |
| Optimal wiring for an accumulator switch and green light scheme, and the potential failure cause of a delicate field fuse. | 1st Jul 1928 | Box 60 \ 3 Scan068 | |
| Revisions and corrections to a Phantom technical wiring diagram. | 24th Jul 1928 | Box 60 \ 3 Scan069 | |
| Analysis of an electrical circuit for a green lamp, discussing options for wiring shunt coils to prevent field fuse failure. | 25th Jul 1928 | Box 60 \ 3 Scan070 | |
| Installation and testing of a higher output dynamo armature for a 20 HP vehicle. | 25th Jul 1928 | Box 60 \ 3 Scan071 | |
| Modifications for a distribution board fitted with a green lamp switch. | 26th Jul 1928 | Box 60 \ 3 Scan072 | |
| Clarifying a misunderstanding about the electrical connections for the cutout, green lamp, and switch coil. | 26th Jul 1928 | Box 60 \ 3 Scan073 | |
| Electrical system failures, specifically concerning the dynamo, lamps, cutout shunt coils, and charging indicators. | 24th Jul 1928 | Box 60 \ 3 Scan074 | |
| Continued discussion on field fuse failures, oxidation issues, and potential improvements for a 20 HP car. | 24th Jul 1928 | Box 60 \ 3 Scan075 | |
| Simplifying the electrical wiring for a green lamp switch unit and the Klaxon horn. | 24th Jul 1928 | Box 60 \ 3 Scan076 | |
| Typed memorandum discussing proposals for electrical arrangements, specifically dynamo and headlamp integration. | 5th Aug 1928 | Box 60 \ 3 Scan077 | |
| Parts list for the Battery Charge Indicator Switch on Phantom and 20 HP Chassis. | 5th Aug 1928 | Box 60 \ 3 Scan078 | |
| Continued list of standard and stock parts with quantities and specifications. | 15th Aug 1928 | Box 60 \ 3 Scan079 | |
| Alteration to the Phantom's green light wiring scheme. | 1st Sep 1928 | Box 60 \ 3 Scan080 | |
| Insulation and connections for a green light magnet. | 11th Sep 1928 | Box 60 \ 3 Scan081 | |
| Part requirement memo for a warning light for the instrument board. | 20th Nov 1928 | Box 60 \ 3 Scan082 | |
| Explaining an issue where the green lamp on the S.S. Distribution Board switch fails to turn off. | 3rd Dec 1928 | Box 60 \ 3 Scan083 | |
| Note referencing further instructions for a green lamp switch on a distribution board. | 1st Feb 1928 | Box 60 \ 3 Scan084 | |
| Modifications to a unit for the 'Green Light Scheme' to improve its operation. | 1st Feb 1928 | Box 60 \ 3 Scan085 | |
| Voltage adjustment for a green lamp switch. | 12th Dec 1928 | Box 60 \ 3 Scan086 | |
| Falling back voltage and testing of a green lamp switch. | 12th Dec 1928 | Box 60 \ 3 Scan087 | |
| Recommendation on the procedure for breaking an armature with angular delay, and a follow-up note. | 12th Dec 1928 | Box 60 \ 3 Scan088 | |
| Schematic for an S.S. Distribution Board which incorporates a green lamp switch. | 2nd Jan 1929 | Box 60 \ 3 Scan089 | |
| Wiring diagram for an S.S. Distribution Board incorporating a Green Lamp Switch, showing connections for a production test. | 11th Nov 1940 | Box 60 \ 3 Scan090 | |
| Electrical fault on the S.S. distribution board and green lamp switch causing dynamo polarity reversal. | 19th Dec 1928 | Box 60 \ 3 Scan091 | |
| Continued analysis of switchbox wiring arrangements concerning a green lamp, dynamo, and battery contacts. | 19th Dec 1928 | Box 60 \ 3 Scan092 | |
| Electrical fault involving a green lamp circuit, its diagnosis, and immediate corrective action. | 20th Dec 1928 | Box 60 \ 3 Scan093 | |
| Letter to a recipient in France detailing a potential electrical fault with the dynamo polarity on S.S. chassis and the required fix. | 20th Dec 1928 | Box 60 \ 3 Scan094 | |
| Design and implementation of a green lamp scheme for the accumulator charge indicator, including a circuit diagram. | 26th Dec 1928 | Box 60 \ 3 Scan095 | |
| Recommendation to avoid an experimental green lamp battery indicator on the 'SS' car and use standard Phantom equipment instead. | 27th Dec 1928 | Box 60 \ 3 Scan096 | |
| Continuation of a document discussing the testing of a green lamp scheme and the generator arrangement for Phantom cars. | 28th Dec 1928 | Box 60 \ 3 Scan097 | |
| Investigation and proposed modification for an erratic green lamp warning system on the 18-EX model in France. | 28th Dec 1928 | Box 60 \ 3 Scan098 | |
| Summary of details of operating voltages for temperature-compensated auto and green lamp switches. | 28th Dec 1928 | Box 60 \ 3 Scan099 | |
| Test report on a car's electrical system, detailing issues with battery charge and switch operation after 4108 miles. | 28th Dec 1928 | Box 60 \ 3 Scan100 | |
| Internal memorandum investigating the reduced operating voltage of a green lamp switch. | 29th Dec 1928 | Box 60 \ 3 Scan101 | |
| Circuitry for a green lamp charge indicator, noting issues with a proposed design. | 4th Jan 1929 | Box 60 \ 3 Scan102 | |
| Extract detailing dynamo and green lamp performance and adjustments on models 18-EX and 14-G4. | 9th Jan 1929 | Box 60 \ 3 Scan103 | |
| Deferral and merits of a 'Green Lamp Scheme' as a battery charge indicator. | 9th Jan 1929 | Box 60 \ 3 Scan104 | |
| Deferral of the 'SS. GREEN LAMP SCHEME' for a battery charge indicator due to concerns over its necessity and cost. | 6th Jan 1929 | Box 60 \ 3 Scan105 | |
| Operation of the green lamp unit and switchbox within the S.S. distribution board. | 1st Jan 1929 | Box 60 \ 3 Scan106 | |
| Test report on the performance of a green lamp switch and dynamo on car 20-EX. | 11th Jan 1929 | Box 60 \ 3 Scan107 | |
| Trade-offs of using higher output dynamos, including charging rates and battery life concerns. | 1st Feb 1929 | Box 60 \ 3 Scan108 | |
| Dynamo output, battery overcharging issues, and the use of a green lamp charge indicator. | 1st Feb 1929 | Box 60 \ 3 Scan109 | |
| Experiments with higher output dynamos and green lamp indicator schemes on various car chassis. | 27th Feb 1929 | Box 60 \ 3 Scan110 | |
| Diagram of the chassis electrical system, incorporating alternative green lamp or auto charge control switch units. | 27th Feb 1929 | Box 60 \ 3 Scan111 | |
| Modification of a switchbox for the S.S. Chassis. | 31th Jan 1929 | Box 60 \ 3 Scan112 | |
| Investigations into the operating qualities and electrical variations of a green lamp scheme. | 8th May 1929 | Box 60 \ 3 Scan113 | |
| Analysis of the green lamp switch unit's function in relation to battery charging, dynamo output, and driver control. | 8th May 1929 | Box 60 \ 3 Scan114 | |
| The implications of a driver's response to a green lamp indicator for battery charging. | 10th May 1929 | Box 60 \ 3 Scan115 | |
| Necessity and aesthetic impact of a green lamp switch on grouped instrument panels. | 10th May 1929 | Box 60 \ 3 Scan116 | |
| Test results for auto switches and green lamp switches removed from cars to check setting consistency after use. | 27th Jun 1929 | Box 60 \ 3 Scan117 | |
| The testing and modification of electrical switches, noting changes in voltage settings and a sticking issue. | 27th Jun 1929 | Box 60 \ 3 Scan118 | |
| Summary of details of operating voltages of temperature compensated auto and green lamp switches. | 27th Jun 1929 | Box 60 \ 3 Scan119 | |
| Test report on a green lamp switch, detailing voltage performance and adjustments over mileage. | 22th Apr 1929 | Box 60 \ 3 Scan120 | |
| Standard arrangement and modifications of an S.S. switchbox, particularly in relation to a green lamp scheme. | 8th Jul 1929 | Box 60 \ 3 Scan121 | |
| Experimental automatic switch arrangements and auto charge control systems for chassis 20-EX. | 21th Nov 1929 | Box 60 \ 3 Scan122 | |
| Battery overcharging issues, dynamo output, and vehicle lighting systems. | 21th Nov 1929 | Box 60 \ 3 Scan123 | |
| Dynamo output and green lamp scheme, enclosing a related report. | 13th Dec 1929 | Box 60 \ 3 Scan124 | |
| Improvements to the vehicle's dynamo and battery charge indication system. | 28th Dec 1929 | Box 60 \ 3 Scan125 | |
| Proposal to improve dynamo output using a voltage control vibrator instead of the 3rd brush scheme. | 1st Jan 1931 | Box 60 \ 3 Scan126 | |
| Potential for improving car generators by investigating the German 'Bosch' voltage regulator system. | 15th Jan 1931 | Box 60 \ 3 Scan127 | |
| Technical memo about dynamo modifications to increase current output by altering the magnetic circuit and armature. | 9th Jan 1931 | Box 60 \ 3 Scan128 | |
| Technical discussion on different types of dynamo systems for chassis electricals, comparing inherent and external regulation. | 9th Jan 1931 | Box 60 \ 3 Scan129 | |
| Comparison of long-period vibrator regulator control versus dithering contact methods and the potential adaptation of a Bosch type regulator. | 9th Jan 1931 | Box 60 \ 3 Scan130 | |
| Comparing the heating of shunt wound and battery controlled dynamos at various outputs. | 9th Jan 1931 | Box 60 \ 3 Scan131 | |
| Cover note for a sketch showing a suggested scheme for a two-stage vibrator regulator for dynamos. | 23th Dec 1931 | Box 60 \ 3 Scan132 | |
| Visit to supplier Messrs. Lucas discussing developments in electrical components like regulators, starters, and horns. | 17th Feb 1932 | Box 60 \ 3 Scan133 | |
| Request to obtain a C.A.V. type B.2 voltage regulator for comparison testing. | 29th Feb 1932 | Box 60 \ 3 Scan134 | |
| Requesting an opinion on proceeding with experimental work for Dynamo Voltage Regulators. | 1st Mar 1932 | Box 60 \ 3 Scan135 | |
| Letter from C.A.V - BOSCH providing patent numbers for an 'F' type Regulator for Dynamos. | 5th Mar 1932 | Box 60 \ 3 Scan136 | |
| Regulator for a 150 watt plain shunt dynamo and lead-acid battery. | 3rd Mar 1932 | Box 60 \ 3 Scan137 | |
| Decision to fit a Bosch regulated dynamo, previously on 27-EX, to car 19-EX. | 3rd Mar 1932 | Box 60 \ 3 Scan138 | |
| Letter from Joseph Lucas Research Laboratories regarding a conversation about voltage regulators and C.A.V.-Bosch. | 21th Mar 1932 | Box 60 \ 3 Scan139 | |
| Letter from C.A.V - BOSCH regarding a request for details on a voltage regulator. | 22th Mar 1932 | Box 60 \ 3 Scan140 | |
| Letter to CAV - Bosch Ltd. regarding the testing of a CAV B2 Regulator and issues with its wiring. | 23th Mar 1932 | Box 60 \ 3 Scan141 | |
| Telegram requesting another B2H1 regulator and a reply to a letter regarding connections. | 31th Mar 1932 | Box 60 \ 3 Scan142 | |
| Letter from C.A.V - Bosch regarding a Regulator model B2H1. | 1st Apr 1932 | Box 60 \ 3 Scan143 | |
| Letter to Messrs. C.A.V. - Bosch Ltd. accepting their offer to send a DBR dynamo for testing. | 1st Apr 1932 | Box 60 \ 3 Scan144 | |
| Request to order a C.A.V. B2HL voltage regulator. | 1st Apr 1932 | Box 60 \ 3 Scan145 | |
| Causes of engine misfiring at slow speed and full throttle, focusing on ignition system resistance. | 6th Apr 1932 | Box 60 \ 3 Scan146 | |
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