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<DIV dir=ltr align=left><SPAN class=072192017-07032020><FONT color=#0000ff
size=2 face=Arial>Here is another article on reversing polarity for BMC
cars.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=072192017-07032020><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=072192017-07032020><FONT color=#0000ff
size=2 face=Arial>Harold</FONT></SPAN></DIV><BR>
<DIV lang=en-us class=OutlookMessageHeader dir=ltr align=left>
<HR tabIndex=-1>
<FONT size=2 face=Tahoma><B>From:</B> Healeys
[mailto:healeys-bounces@autox.team.net] <B>On Behalf Of </B>i
erbs<BR><B>Sent:</B> Saturday, March 07, 2020 8:30 AM<BR><B>To:</B> Kees
Oudesluijs<BR><B>Cc:</B> Ahealey help<BR><B>Subject:</B> Re: [Healeys]
Polarity<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV>What about tachometers? <BR><BR>
<DIV data-smartmail="gmail_signature">Ira Erbs<BR>Portland,OR<BR>1959 Austin
Healey BN4<BR>1967 MGB</DIV></DIV><BR>
<DIV class=gmail_quote>
<DIV class=gmail_attr dir=ltr>On Sat, Mar 7, 2020, 6:00 AM Kees Oudesluijs
<<A href="mailto:coudesluijs@chello.nl">coudesluijs@chello.nl</A>>
wrote:<BR></DIV>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex">
<DIV>
<P>The original pumps had a capacitor over the points which made them dual
polarity. At a later stage SU changed the capacitor for a diode which made the
pump polarity sensitive. If you remove the diode and fit a transil over the
points the pump becomes dual polarity.</P>
<P>The very early pumps with the single points may not have had any capacitor
or diode fitted, which would lead to spark erosion of the points. These were
also dual polarity.<BR></P>
<P>The later electronic/solid state versions are all polarity sensitive.</P>
<P>Kees Oudesluijs</P>
<P><BR></P>
<P><BR></P>
<DIV>Op 7-3-2020 om 14:49 schreef David P:<BR></DIV>
<BLOCKQUOTE type="cite">
<P>SU fuel pumps are generally polarity sensitive...</P>
<P><BR></P>
<DIV>On 3/7/2020 1:18 AM, Kees Oudesluijs wrote:<BR></DIV>
<BLOCKQUOTE type="cite">
<P>In addition to the article:</P>
<P>-Change polarity to the radio if fitted. Some older radio's have a
polarity switch.</P>
<P>-Check if clock is polarity sensitive. Some older Smiths/Jaeger clocks
are dual polarity. Later ones are polarity sentive.</P>
<P>-Change over the wires from the Amp gauge.</P>
<P><BR></P>
<P>Kees Oudesluijs</P>
<P><BR></P>
<P><BR></P>
<DIV>Op 7-3-2020 om 04:48 schreef Max Byers:<BR></DIV>
<BLOCKQUOTE type="cite">
<DIV>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">See
attachment.<U></U><U></U></SPAN></P>
<P class=MsoNormal><SPAN
style="COLOR: #1f497d"><U></U><U></U></SPAN> </P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">Steve
Byers<U></U><U></U></SPAN></P>
<P class=MsoNormal><SPAN
style="COLOR: #1f497d">HBJ8L/36666<U></U><U></U></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">BJ8
Registry<U></U><U></U></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">AHCA Delegate at
Large<U></U><U></U></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">Havelock, NC
USA<U></U><U></U></SPAN></P>
<P class=MsoNormal><SPAN
style="COLOR: #1f497d"><U></U><U></U></SPAN> </P>
<DIV>
<DIV
style="BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; BORDER-BOTTOM: medium none; PADDING-BOTTOM: 0in; PADDING-TOP: 3pt; PADDING-LEFT: 0in; BORDER-LEFT: medium none; PADDING-RIGHT: 0in">
<P class=MsoNormal><B><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Tahoma","sans-serif"'>From:</SPAN></B><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Tahoma","sans-serif"'> Healeys [<A
href="mailto:healeys-bounces@autox.team.net" rel=noreferrer
target=_blank>mailto:healeys-bounces@autox.team.net</A>] <B>On Behalf Of
</B>ahbn6--- via Healeys<BR><B>Sent:</B> Friday, March 6, 2020 9:32
PM<BR><B>To:</B> Healey List<BR><B>Subject:</B> [Healeys]
Polarity<U></U><U></U></SPAN></P></DIV></DIV>
<P class=MsoNormal><U></U><U></U> </P>
<P class=MsoNormal><B><SPAN>Is there any step by instructions on how to
change to negative ground?<U></U><U></U></SPAN></B></P>
<P class=MsoNormal><B><SPAN><U></U><U></U></SPAN></B> </P>
<P class=MsoNormal><B><SPAN>John Sims<U></U><U></U></SPAN></B></P>
<P class=MsoNormal><B><SPAN><A href="http://www.healey6.com/"
rel=noreferrer
target=_blank>www.healey6.com</A><U></U><U></U></SPAN></B></P>
<P class=MsoNormal><B><SPAN>Matawan, NJ<U></U><U></U></SPAN></B></P>
<P class=MsoNormal><U></U><U></U> </P></DIV><BR>
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