This was cutting edge stuff in 1970;
Amongst the new material given in the new Chapter the following may here be mentioned: printed and miniaturized circuits; modern alternator design and performance; improved conventional and transistorized ignition systems; new sparking plugs and batteries; quartz iodine head, spot and fog lamps; improved flashing indicator systems; multi-speed windscreen wipers; magnetic-pulse type speedometers and tachometers. An account is given of a new type of flexible optical cable which transmits light from a single source at one end to illuminate several distant small areas, e.g. on the instrument panel and on switches.
Modern Electrical Equipment In Automobiles 2017-06-19
Published in 1970