| Description | Date | Identifier | |
| Note describing the wire connecting the make and break to the coil and its terminals. | 27th Sep 1923 | Box 47 \ 4 Scan009 | |
| Recurring ignition coil failure on chassis 45-G-3, requesting an electrical inspection. | 1st Feb 1926 | Box 47 \ 4 Scan010 | |
| Service and ownership history log for chassis number 45-C-3. | 1st Feb 1926 | Box 47 \ 4 Scan011 | |
| Inspection report on the electrical system of chassis 45-G3, detailing issues with ignition coils and a weak battery. | 4th Feb 1926 | Box 47 \ 4 Scan012 | |
| Instructions on correcting a battery by replacing the electrolyte and performing a long slow charge. | 4th Feb 1926 | Box 47 \ 4 Scan013 | |
| Reference note directing to another document regarding customer complaints. | 14th Jun 1926 | Box 47 \ 4 Scan014 | |
| Letter from a 20 HP car owner seeking advice on a dynamo charging issue that occurs when the engine is warm. | 14th Jun 1926 | Box 47 \ 4 Scan015 | |
| Potential cutout armature jamming due to temperature rise and providing diagnostic steps. | 18th Jun 1926 | Box 47 \ 4 Scan016 | |
| Troubleshooting guide for a dynamo, discussing potential faults with voltage, cutouts, and brushes. | 18th Jun 1926 | Box 47 \ 4 Scan017 | |
| Conclusion regarding the diagnosis of a fault based on a provided description. | 18th Jun 1926 | Box 47 \ 4 Scan018 | |
| Title page for the ammeter section. | 16th Dec 1925 | Box 47 \ 4 Scan019 | |
| Complaint about an American ammeter being fitted to a 20 HP car and the need to source a British-made alternative. | 16th Dec 1925 | Box 47 \ 4 Scan020 | |
| Customer complaint about the 'U.S.A.' marking on an ammeter, requesting a British-made part for a new order. | 11th Feb 1926 | Box 47 \ 4 Scan021 | |
| Report from Lillie Hall to Works regarding a faulty ammeter, No. 282467. | 11th Feb 1926 | Box 47 \ 4 Scan022 | |
| Test report on a Weston Ammeter No. 282467 from chassis GPK.14. | 16th Feb 1926 | Box 47 \ 4 Scan023 | |
| Title page for the 'Battery' section. | 9th May 1924 | Box 47 \ 4 Scan024 | |
| Ongoing correspondence with an owner and Chloride Electrical Co. regarding Exide batteries for 20-HP chassis. | 9th May 1924 | Box 47 \ 4 Scan025 | |
| Return and testing of an Exide battery from a 20 HP car, comparing its performance to a P & R battery. | 9th May 1924 | Box 47 \ 4 Scan026 | |
| Receipt of an Exide battery and instructions for action. | 18th Jun 1924 | Box 47 \ 4 Scan027 | |
| Investigation into defects in an Exide battery, specifically electrolyte overflow, stopper tightness, and separator design. | 3rd Jul 1924 | Box 47 \ 4 Scan028 | |
| Battery stopper defects causing acid leaks and a recommendation for improvement to be sent to the Exide Co. | 1st Jul 1924 | Box 47 \ 4 Scan029 | |
| Investigation into an Exide battery's acid overflow during gassing and a proposed modification. | 2nd Jul 1924 | Box 47 \ 4 Scan030 | |
| Use of an Exide battery from chassis GA.72 and 56 S.3 on test cars rather than an experimental car. | 9th Jul 1924 | Box 47 \ 4 Scan031 | |
| The experimental results and future testing of an Exide battery from a customer's car. | 10th Jul 1924 | Box 47 \ 4 Scan032 | |
| How to handle a customer's complaint about a battery on chassis G.F.74. | 17th Feb 1925 | Box 47 \ 4 Scan033 | |
| Customer complaint and correspondence regarding a faulty Exide battery on a 20-HP car, chassis GF-74. | 13th Feb 1925 | Box 47 \ 4 Scan034 | |
| Note on standard batteries for the 20-HP model losing electrolyte due to a high charging rate. | 13th Feb 1925 | Box 47 \ 4 Scan035 | |
| Correspondence regarding a customer battery complaint for a 20-HP chassis. | 22th May 1924 | Box 47 \ 4 Scan036 | |
| Agreeing to return a C.A.V. battery from chassis 68-H7 for examination, noting previous issues with this make. | 23th May 1924 | Box 47 \ 4 Scan037 | |
| Request for testing and disposal instructions for a faulty C.A.V. battery returned from a 20-HP Chassis. | 12th Dec 1924 | Box 47 \ 4 Scan038 | |
| The poor condition and testing of a C.A.V. battery type 12XR2 from chassis 57-S4. | 9th Jan 1925 | Box 47 \ 4 Scan039 | |
| Investigation into the failure of a C.A.V. 12XR2 battery from chassis 57.S.4. | 10th Jan 1925 | Box 47 \ 4 Scan040 | |
| Battery discharge test chart for a C.A.V. Willard 12XR2 battery from chassis 57.S.H. | 9th Jan 1925 | Box 47 \ 4 Scan041 | |
| Battery test chart for a B.A.V. Willard 12XR3 battery from chassis 57.S4. | 6th Jan 1925 | Box 47 \ 4 Scan042 | |
| Battery explosion in a 20HP chassis during an engine gear test. | 9th Nov 1925 | Box 47 \ 4 Scan043 | |
| Battery explosion in a 20 HP Chassis. | 12th Nov 1925 | Box 47 \ 4 Scan044 | |
| Internal memorandum discussing battery and dynamo issues on 40/50 HP & 20 HP chassis models. | 25th Nov 1925 | Box 47 \ 4 Scan045 | |
| Difficulty owners have in keeping batteries charged for 40/50 HP and 20 HP chassis models. | 30th Nov 1925 | Box 47 \ 4 Scan046 | |
| Request for useful information regarding driver training to be shared with the author and Mr. Bowring. | 30th Nov 1925 | Box 47 \ 4 Scan047 | |
| Issues with batteries and dynamos on 40/50 HP & 20 HP chassis. | 1st Dec 1925 | Box 47 \ 4 Scan048 | |
| Cases of undercharging batteries and melting dynamos in 20 HP cars. | 1st Dec 1925 | Box 47 \ 4 Scan049 | |
| Common issues with batteries and dynamos, including charging problems, overcharging, and component failures. | 30th Nov 1925 | Box 47 \ 4 Scan050 | |
| Owner experiences and issues with batteries and dynamos on 40/50 HP & 20 HP chassis. | 4th Dec 1925 | Box 47 \ 4 Scan051 | |
| Title page for a document concerning battery ignition. | 5th Oct 1922 | Box 47 \ 4 Scan052 | |
| Battery ignition failure in Goshawk II cars. | 5th Oct 1922 | Box 47 \ 4 Scan053 | |
| Title page for a document about Ballast Resistance. | 24th Jun 1924 | Box 47 \ 4 Scan054 | |
| Cause and cost allocation for ballast resistance failures. | 24th Jun 1924 | Box 47 \ 4 Scan055 | |
| Cover page for a section on the coil. | 14th Jul 1923 | Box 47 \ 4 Scan056 | |
| Requesting an investigation into failures of 20-HP ignition coils. | 14th Jul 1923 | Box 47 \ 4 Scan057 | |
| Preliminary test results on 20 HP ignition coil failures. | 16th Jul 1923 | Box 47 \ 4 Scan058 | |
| The investigation and testing of several 20-HP ignition coils. | 17th Aug 1923 | Box 47 \ 4 Scan059 | |
| Faulty ignition coil (No. 2495) from a 40/50-HP chassis (No. 20-KG), sent for examination and report. | 24th Aug 1923 | Box 47 \ 4 Scan060 | |
| Follow-up memo regarding the investigation of failed ignition coils. | 7th Sep 1923 | Box 47 \ 4 Scan061 | |
| Reuse of repaired ignition coils after failure, seeking clarification on production policy. | 15th Sep 1923 | Box 47 \ 4 Scan062 | |
| The failure of 40/50 coils on a Goshawk engine, confirming re-wound coils are tested and approved for use. | 17th Sep 1923 | Box 47 \ 4 Scan063 | |
| Follow-up memorandum requesting a report on two failed ignition coils returned for investigation. | 7th Sep 1923 | Box 47 \ 4 Scan064 | |
| The re-use of repaired ignition coils after failure. | 15th Sep 1923 | Box 47 \ 4 Scan065 | |
| Investigation report on a faulty coil (ref X.4273), identifying a short circuit in the secondary winding. | 2nd Nov 1923 | Box 47 \ 4 Scan066 | |
| Investigation into a faulty coil from 62-H-6, noting slight charring, and the receipt of a second similar faulty coil (49-LK) for further analysis. | 8th Nov 1923 | Box 47 \ 4 Scan067 | |
| Investigation into a faulty coil from car 62-H-6 Harrison, detailing the initial findings and the plan for further analysis on a second failed coil. | 8th Nov 1923 | Box 47 \ 4 Scan068 | |
| The testing of a faulty Harrison ignition coil and the proposal to charge for its replacement. | 19th Nov 1923 | Box 47 \ 4 Scan069 | |
| Ignition coil failure on a 20 HP Chassis 5-G-2. | 5th Sep 1924 | Box 47 \ 4 Scan070 | |
| Faulty 3TG3 ignition coil from chassis 5-GII, identifying a break in the secondary winding. | 15th Sep 1924 | Box 47 \ 4 Scan071 | |
| Failure of an ignition coil housed in a Bakelite case. | 16th Sep 1924 | Box 47 \ 4 Scan072 | |
| Instruction sheet detailing the investigation of a faulty coil from chassis 5GII, identifying a bad connection between its primary and secondary windings. | 23th Sep 1924 | Box 47 \ 4 Scan073 | |
| The investigation into the failure of an ignition coil by examining its windings. | 25th Sep 1924 | Box 47 \ 4 Scan074 | |
| Title page for a document about a condenser. | 2nd Feb 1924 | Box 47 \ 4 Scan075 | |
| Investigation into a faulty 20HP condenser with burnt-out platinums from a recently delivered car. | 2nd Feb 1924 | Box 47 \ 4 Scan076 | |
| Investigation report on a condenser from chassis GA. 70. | 22th Feb 1924 | Box 47 \ 4 Scan077 | |
| Test report for condenser number 378 from chassis GA.70. | 22th Feb 1924 | Box 47 \ 4 Scan078 | |
| Returning a condenser from chassis GA-70. | 27th Feb 1924 | Box 47 \ 4 Scan079 | |
| Returned condenser from a 20 HP chassis, requesting a test report. | 28th Apr 1924 | Box 47 \ 4 Scan080 | |
| Confirming the successful test results of a 20 HP chassis condenser from G.F.6. | 1st May 1924 | Box 47 \ 4 Scan081 | |
| Test report on Condenser No. 931 from Chassis No. GF.6. | 30th Apr 1924 | Box 47 \ 4 Scan082 | |
| Ongoing ignition failures on 20-HP models due to the burning of make and break points. | 11th Nov 1924 | Box 47 \ 4 Scan083 | |
| Title page for the 'Distributor & Contact Breaker' section. | 19th Jan 1924 | Box 47 \ 4 Scan084 | |
| Report regarding a 20-HP Make & Break Ignition Cam failure on a production test car and a customer's car. | 19th Jan 1924 | Box 47 \ 4 Scan085 | |
| The failure of 20 HP make and break ignition cams due to incorrect hardening. | 1st Jan 1924 | Box 47 \ 4 Scan086 | |
| Ignition failures on 20-HP cars due to moisture and condensation inside the distributor. | 22th Feb 1924 | Box 47 \ 4 Scan087 | |
| Letter regarding a recurring issue with burnt platinum points on a 20 HP chassis, GFK-30. | 18th Sep 1925 | Box 47 \ 4 Scan088 | |
| Pitted contacts on the make and break mechanism for a 20 HP chassis. | 21th Sep 1925 | Box 47 \ 4 Scan089 | |
| Concluding page of a report stating there are no faults found in the design, referring it as a matter for Works Policy. | 21th Sep 1925 | Box 47 \ 4 Scan090 | |
| Causes and potential solutions for the pitting of platinum points on a 20 HP chassis. | 22th Sep 1925 | Box 47 \ 4 Scan091 | |
| Title page for a section on magnetos. | 7th Nov 1924 | Box 47 \ 4 Scan092 | |
| Failure and subsequent replacement of an R.O.1 Magneto, No.75333, for the Clyde Automobile Co. of Glasgow. | 7th Nov 1924 | Box 47 \ 4 Scan093 | |
| The inadequacy of the standard Works test for magnetos, citing examples of units failing after passing. | 11th Dec 1924 | Box 47 \ 4 Scan094 | |
| Customer's returned faulty R.O.1 magneto from a 20-HP Chassis GAK.77. | 11th Dec 1924 | Box 47 \ 4 Scan095 | |
| Test results for a Watford R.O.1 magneto from chassis GAK 77, including low speed sparking and an endurance test. | 9th Jan 1925 | Box 47 \ 4 Scan096 | |
| Test report on a magneto, concluding the unit is OK and suspecting faulty timing as the cause of a customer-reported failure. | 29th Jun 1920 | Box 47 \ 4 Scan097 | |
| Investigation into a magneto's performance concludes the issue is likely faulty timing. | 9th Jan 1925 | Box 47 \ 4 Scan098 | |
| Test report on a Watford RO1 Magneto No. 68302 from chassis GAK.77. | 9th Jan 1925 | Box 47 \ 4 Scan099 | |
| Faulty magneto from a 20-HP chassis and arrangements for further testing. | 28th Jan 1925 | Box 47 \ 4 Scan100 | |
| Request to test two returned magnetos for bad slow running and determine responsibility for repair costs. | 12th Feb 1925 | Box 47 \ 4 Scan101 | |
| Follow-up memo regarding a free-of-cost repair for a magneto on chassis GAK-77. | 11th Feb 1925 | Box 47 \ 4 Scan102 | |
| Investigation of a Magneto for Chassis No. GAK-77. | 13th Feb 1925 | Box 47 \ 4 Scan103 | |
| Instructions for a further bench test on a Magneto (NO 68302) due to unsatisfactory performance in a hot condition. | 2nd Mar 1925 | Box 47 \ 4 Scan104 | |
| Instructions detailing a low-speed sparking test on a magneto and the probable cause of failure. | 29th Jun 1920 | Box 47 \ 4 Scan105 | |
| On the performance and updated testing speeds for a Watford R.O.1 magneto following a customer complaint. | 3rd Mar 1925 | Box 47 \ 4 Scan106 | |
| Urgent internal memo chasing outstanding reports on two magnetos for chassis GAK-77 and 60-H-5. | 5th Mar 1924 | Box 47 \ 4 Scan107 | |
| Magneto tests for chassis 60-H-5, suggesting a potential timing issue. | 6th Mar 1925 | Box 47 \ 4 Scan108 | |
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