Radio Added to Model A

[marc hildebrant]

Group,

I read an interesting article in 'Radio Service Man's Handbook" from 1931 written by Solomon Perlman called " The Car Battery for Automotive Radio".

The article made a number of comments :

1. For normal radio installation, the negative side of the battery goes to the car frame and this makes the shielding of the radio easy and effective.

2. A postive ground system makes the installation of a radio difficult and the article recommends that the polarity be reversed so that the car has a negative ground system.

Later in the article, the charging system is described for the positive ground system (Model A). The article concludes with the method to convert the car to negative ground :

1. Reverse the ammeter
2. Reverse the battery

That's it. The article says that sometimes the generator needs to have it's cutout held down for 10 seconds before starting the car after the battery has been reversed. However, most times the generator will reverse itself automatically and assume the new polarity after a reversal from positive to negative ground.

The article states that the lighting and ignition systems will NOT be affected by the reversal in current.

I can't scan the article.

Marc