Mack trucks were 12v positive ground (with an alternator) at least into
the '70's (Dad had one).
Randall
59 TR3A "daily driver wanna be"
Chip Old wrote:
>
> On Wed, 14 Jul 1999, Fred Thomas wrote to Chip19474@aol.com:
>
> > Could have started here, the 1906 Ford, 1907 Cadillac, 1915 Chev, all
> > pos.ground.
>
> Positive grounded systems used to be common in the US. If I remember
> correctly, Ford continued to use positive ground into the 1950s and was
> the last US manufacturer to switch.
>
> -------------------------------------------------------------------
> Chip Old 1948 M.G. TC TC6710 XPAG7430 NEMGTR #2271
> Cub Hill, Maryland 1962 Triumph TR4 CT3154LO CT3479E
> fold@bcpl.net
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