My original tach said "positive ground" right on the face in tiny letters.
Take a closer look. I suppose after they went to negative ground they
stopped this practice.
on 4/26/01 9:31 AM, frank krajewski at email@example.com wrote:
> I am doing my annual spring cleaning and finally sorting thru the parts
> I bought at Carlisle last year and the year before. Just in time to
> amass even more this year. My question: How do you determine the
> polarity of a tach? I have many and some are from earlier MGBs that are
> positive ground while the later (1968 +) are negative. The tachs from
> the 3 main bearing MGBs (1962 - 1964) are simple as they are mechanical.
> I want to tag them, which I should have done a year ago when I first
> arrived home and the data was fresh in my mind.
> Frank "Swamp Yankee" Krajewski
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the red one with the silver bootlid.
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