Hardwareguy,

Got to thinking about where I heard about the tapped battery trick.

A trip to my 'library' reveals a nice article in Petersen's complete book of Engine Swapping No. 4 (published in 1975) about so-called 'dual systems'. One uses the tapped battery, another uses the dual 6-volt batteries, and still another uses a 'special electrical conversion relay system' that included directions and a self-tapping screw for making the 6-volt 'pick-up terminal' in the middle of a 12-volt battery.

Kinda depressing looking at that book, I remember buying it new and now it's 27 years old!


'38 Chevy 1-1/2 ton
'49 Chevy 1/2 ton
'54 Chevy 6400 2 ton
'55.2 GMC 3/4 ton
'56 GMC 1-ton

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