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<DIV><FONT size=2>My mistake, I was thinking of the coil
measurement.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>But you still don't need to disconnect the battery to measure
the ballast resistance, in fact because of the way some ignitions are wired that
would prevent you measuring it anyway, as the battery may be needed to operate
an ignition relay to connect the coil feed wire to 12v.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>As long as the wires are removed from the coil to stop any
current flowing you can measure resistance on a wire that is carrying 12v, for
the same reason that birds can sit on a 400kV power line.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>PaulH.</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV><FONT size=2></FONT><FONT size=2></FONT><BR></DIV>Are we on the same
page? The way I read it, it was a resistance measurement from the coil
positive wire to the white or white/brown wire on the fuse box, with the
ignition switch turned on, in order to find out if there was a ballast wire in
the coil harness. I wouldn't attach my ohmmeter to a hot
circuit.<BR></BLOCKQUOTE></BODY></HTML>