In 1956 Plymouth and Dodge, DeSoto and Chrysler all
went to 12 volts electrical systems.
What OHM's are the radio back seat speakers in theses cars.
Most of them had 4 X 6 rear speakers up to and including 1956 and
then in 1957 they went to the larger 6 X 9 speakers on the rear shelf.
Also any information on the front speakers is welcome. I think the
radios were only about 5 to 8 watts?