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<DIV><FONT size=2>Are you *sure* you reversed? And didn't just put them
back on the same terminals? A typical ammeter and especially one used in a
car of the era of the TF is a simple moving iron arrangement, in a coil with
just two terminals. Reverse the direction of the current in the coil
and you reverse the magnetism, and hence the needle movement. That's
why ammeters work - current flows one way to indicate a charge, and the
other way to indicate a discharge. Incidentally you could have done
something else such that it was charging when you originally connected it, and
now you have reversed it it isn't. You need to confirm it *is* charging
with a voltmeter.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>PaulH.</FONT></DIV>
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style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=mgs@autox.team.net href="mailto:mgs@autox.team.net">dontoy--- via
Mgs</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=mgs@autox.team.net
href="mailto:mgs@autox.team.net">mgs@autox.team.net</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, January 18, 2015 3:24
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [Mgs] 54 TF ammeter
question</DIV>
<DIV><BR></DIV><FONT face=Helvetica>Dear listers, <BR>I have a 1954 TF which
my father drove home from Pittsburgh in 1971. After an electrical problem way
back then the ammeter got fried, along with damaging the temperature gauge. In
an effort to go back to original I sent both units out for restoration to
MoMa. I installed the temperature gauge first and it went up to 185* and held
it there. That made me smile. Then I installed the ammeter. Since I had did
the polarity switch (now a negative ground car) I wasn't sure which wire went
on which terminal. I just guessed and put the brown with white on the left
terminal, the solid brown on the right. Of course upon starting the car,
the ammeter ran in the negative side. 50% chance and I guessed wrong. So I
thought. After reversing the wires I got the same result. I know I'm charging
since I have never had a problem. I don't run a trickle charger and can start
the car anytime in go out into the garage, even after months. Is this just one
of the effects of switching the polarity or is there something I'm missing. I
was showing a charge on the aftermarket unit that I was trying to replace.
Ideas? <BR>Don Toy<BR>" all great men are dead... And I'm not feeling
well"<BR><BR>Sent from Xfinity Connect Mobile App</FONT>
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