Originally Posted by Waveski
There is a ‘55 series 1 3100 up for auction on BaT.
The seller stated that it is 12 volt from the factory. Is he misinformed?
My inquiries are based solely on technical interest.

Misinformed.

The 1955 First Series trucks were issued from the factory with a 6V, negative ground electrical system. (While there could have been exceptions, it is doubtful and I know of no documented examples).

Cite: The attached doc (p.159 - Engine Electrical System) is from the GM Heritage collection: 1955 Chevrolet First Series specifications. Published in October 1954.
Attachments


1955 1st Series 3100
ol'55