Re: electrical system

Posted by HH56 On 2023/5/1 9:07:23

To the best of my knowledge there was no electrical testing and theory section offered for the 21-23 series. The wiring diagrams were about all Packard provided.

There are some small differences but a lot of the information in the electrical section of the 51-4 service manual is similar if not identical to what you would need for the earlier cars.

Some of the Motor's manuals of the era are also good resources and were updated regularly with a new edition sometimes published on a yearly basis. They covered individual electrical components but did not have wiring diagrams. Instead, the books were more a compilation covering many items in the car and intended for independent garages. Since they were for a non factory trained mechanic, in many cases they offered more useful information than Packard provided in their own manuals. The books are often found on ebay.