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PREFACE:

The book has grown again! But then it was always going to, because automobile electrical and electronic systems have grown. I have included just a bit more coverage of basic electrical technology in response to helpful comments received. 

This can be used as a way of learning the basics of electrical and electronic theory if you are new to the subject, or as an even more comprehensive reference source for the more advanced user. 

The biggest change is that even more case studies are included, some very new and others tried and tested – but they all illustrate important aspects. There has been a significant rationalization of motor vehicle qualifications since the second edition. 

However, with the move towards Technical Certificates, this book has become more appropriate because of the higher technical content. AE&ES3 is ideal for all MV qualifications, in particular:

The needs of these qualifications are met because the book covers theoretical and practical aspects. Basics sections are included for ‘new users’ and advanced sections are separated out for more advanced users, mainly so the ‘new users’ are not scared off! Practice questions (written and multiple choice) are now included that are similar to those used by awarding bodies.

 Keep letting me know when you find the odd mistake or typo, but also let me know about new and interesting technology as well as good web sites. I will continue to do the same on my site so keep dropping by.In 1936, the much-talked about move to positive earth took place. Lucas played a major part in this change.

 It was done to allow reduced spark plug firing voltages and hence prolong electrode life. It was also hoped to reduce corrosion between the battery terminals and other contact points around the car.

 The 1950s was the era when lighting began to develop towards today’s complex arrangements. Flashing indicators were replacing the semaphore arms and the twin filament bulb allowed more suitable headlights to be made. The quartz halogen bulb, however, did not appear until the early 1970s. 

Great improvements now started to take place with the fitting of essential items such as heaters, radios and even cigar lighters! Also in the 1960s and 1970s, many more optional extras became available, such as windscreen washers and two-speed wipers. Cadillac introduced full air conditioning and even a time switch for the headlights.