[AT] Voltage regulator

[Gene Dotson]

    John;

    All Case tractors built in Rock Island plant had positive ground, 
regardless of voltage. Tractors built in the Racine plant all used negative 
ground systems.

            Gene



----- Original Message ----- 
From: "John Wilkens" <jwilkens at eoni.com>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Sunday, September 30, 2007 12:28 PM
Subject: Re: [AT] Voltage regulator


>I struggle with DC equipment!  What tractor/s used 12 volt positive
> grounds?     John W.