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Old 25th Aug 2010, 6:08 pm   #19
ex 2 Base
Heptode
 
Join Date: Nov 2009
Location: Scarborough, North Yorkshire, UK.
Posts: 507
Default Re: Old car radio - how to change polarity?

Very many thanks to all who responded.The new car is a 1947 Riley fitted with a dynamo, my friend read the replies and has decided to buy a DC - DC converter, as suggestet. He has been on to Google and ordered.I had offered to flash the dynamo field but he is a purist old car renovator.
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