Corey:
I was reading a hot rod magazine not too long ago, which had an article
on
exactly this subject. Interestingly, the article claimed that certain
OEM gauges
continued to be six volt, despite the fact that the cars were 12 volt.
I wish I
had the article, or could at least remember which magazine.
Anyway, the article explained that the manufacturers included little
voltage reducers
which attached to the back of some of the gauges. If I remember right,
I think Mustangs
were specifically mentioned as being set up this way, up into the late
1980's. The article
went on to say the same little voltage reducer could be adapted to
enable an original 6v gauge
from an old car to be used in a 12v system. I believe they said that
this would not work for
an ammeter, but the ammeter is indifferent to voltage anyway, right?
Anyone else happen to
read that article?
JC Whitney also offers similar devices which range in price depending on
the amount of current
the device needs to withstand. My jeep originally had a ceramic half
circle-shaped resistor which
dropped the voltage for the fuel gauge and for 6v wiper motors, so there
are cheaper options.
Hope this helps...
Rob Root
1942 GPW
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