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Positive to Neagative - graound that is.

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Trevor Triumph

Jedi Knight
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I have a 1966 Spitfire that was positive ground. I remember there is a procedure to change it to negative ground. As I recall there was one wire to touch to a terminal on the control box. The last time I did that was about 1993 and a friend did it for me, so I didn't pay close attention. I cannot get my memory to go back that far. Any suggestions? T.T.
 
JamesWilson

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