Conversion to negative ground

R

Richard

Guest
Hi everyone. I've arranged to have my car converted to negative
ground. The shop that also installed an electronic ignition now says
that my fuel gage does not work. I've also learned my wipers might
not "park" correctly after being turned on then off.

Can anyone assist with these two issues? I'm interested in learning
whether this is common following negative ground conversion, whether
the two issues can be corrected, and if so, how hard is it to correct?
Thanks.

Regards,
Richard
1967 Green
 
R

Richard

Guest
Now I also wonder whether my working clock will still work, whether the
other gages, blower, bilge pump, horn, etc. will also be affected by
the conversion? While the mechanic has not mentioned those items, I'm
just curious.

Thanks for your help.

Regards,
Richard
1967 Green



> Hi everyone. I've arranged to have my car converted to negative
> ground. The shop that also installed an electronic ignition now says
> that my fuel gage does not work. I've also learned my wipers might
> not "park" correctly after being turned on then off.
>
> Can anyone assist with these two issues? I'm interested in learning
> whether this is common following negative ground conversion, whether
> the two issues can be corrected, and if so, how hard is it to
correct?
> Thanks.
>
> Regards,
> Richard
> 1967 Green
 
A

a_colo_native

Guest
> Hi everyone. I've arranged to have my car converted to negative
> ground. The shop that also installed an electronic ignition now
says
> that my fuel gage does not work. I've also learned my wipers might
> not "park" correctly after being turned on then off.

Richard - Look at the URL below from my personal site I have dealing
with this issue. iT should answer your questions. Everything should
work fine (Clock and blower motors too). The wipers will tend to park
a little above (about an inch) where they used to park. The fuel gage
will need re-wired. It is a complicated task outlined in the page too.

http://www.amphicar.net/minnow/Neg_wiring.htm

John Bevins
Rocky Mountain Amphicar
 
M

Mike Israel

Guest
Re: Re: Conversion to negative ground

John,

That gives me an idea for the club page members area. Perhaps a database form
where members can review and rate aftermarket amphi parts from Hugh and
elsewhere.

There are indeed many more high quality parts coming available. At the same
time, many of us have been dissapointed after paying top dollar for a bodged or
poorly made repro part. Members should share both good and bad experiences with
these items, from mufflers, wheel covers, and horn necks to bilge plugs,
bumpers, and body panels.

Mike I.

Sent wirelessly via BlackBerry from T-Mobile.
 
B

Bill Connelly

Guest
Re: Re: Conversion to negative ground

<table bgColor="#c8e0d8">
<font size="2">Richard:</font>
<font size="2"></font>
<font size="2">You may also want to replace your ignition coil, or at least carry a spare at all times where you can easily get at it, since coil failure shortly after suchpositive-to-negative ground conversions seems to be such acommon occurrence as to be almost a given.</font>
<font size="2"></font>
<font size="2">~Bilgy</font>
<blockquote style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<div style="FONT: 10pt arial">----- Original Message -----
<div style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black">From: a_colo_native
<div style="FONT: 10pt arial">To: amphicar-lovers@yahoogroups.com
<div style="FONT: 10pt arial">Sent: Monday, June 27, 2005 11:13 AM
<div style="FONT: 10pt arial">Subject: [amphicar-lovers] Re: Conversion to negative ground

<tt>> Hi everyone. I've arranged to have my car converted to negative
> ground. The shop that also installed an electronic ignition now
says
> that my fuel gage does not work. I've also learned my wipers might
> not "park" correctly after being turned on then off.

Richard - Look at the URL below from my personal site I have dealing
with this issue. iT should answer your questions. Everything should
work fine (Clock and blower motors too). The wipers will tend to park
a little above (about an inch) where they used to park. The fuel gage
will need re-wired. It is a complicated task outlined in the page too.

http://www.amphicar.net/minnow/Neg_wiring.htm

John Bevins
Rocky Mountain Amphicar


</tt>

<tt>THE AMPHICAR-LOVERS LIST
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J

John Friese

Guest
Bill,

I put the coil replacement issue in the area of "urban legend" since
I can't imagine why such a failure would occur. I'm not even sure
why switching the wires on the primary posts would make much
difference but if that were done, the coil wouldn't know the polarity
had been switched.

I've never had a coil failure and I know that the coil in one of my
cars was also in the car before it's conversion, four years ago.
It's a Bosch brand coil though and I doubt it was the original coil
in the car when the car was new.

John Friese

67 White
67 Red



--- In amphicar-lovers@yahoogroups.com, "Bill Connelly"
<billiam@e...> wrote:
> Richard:
>
> You may also want to replace your ignition coil, or at least carry
a spare at all times where you can easily get at it, since coil
failure shortly after such positive-to-negative ground conversions
seems to be such a common occurrence as to be almost a given.
>
> ~Bilgy
> ----- Original Message -----
> From: a_colo_native
> To: amphicar-lovers@yahoogroups.com
> Sent: Monday, June 27, 2005 11:13 AM
> Subject: [amphicar-lovers] Re: Conversion to negative ground
>
>
> > Hi everyone. I've arranged to have my car converted to
negative
> > ground. The shop that also installed an electronic ignition
now
> says
> > that my fuel gage does not work. I've also learned my wipers
might
> > not "park" correctly after being turned on then off.
>
> Richard - Look at the URL below from my personal site I have
dealing
> with this issue. iT should answer your questions. Everything
should
> work fine (Clock and blower motors too). The wipers will tend to
park
> a little above (about an inch) where they used to park. The fuel
gage
> will need re-wired. It is a complicated task outlined in the page
too.
>
> http://www.amphicar.net/minnow/Neg_wiring.htm
>
> John Bevins
> Rocky Mountain Amphicar
>
>
>
>
> THE AMPHICAR-LOVERS LIST
> ~~~~~~~~~~~~~~~~~~~~~~~
> Please support our sponsors while ensuring the very best
restoration services for your Amphicar. Please pay a visit to:
> http://www.midwestamphicar.com
>
> To Unsubscribe from this List, just send a blank email to:
> amphicar-lovers-unsubscribe@yahoogroups.com
> Before posting requests for information, please check the List
> Archives:
> http://www.escribe.com/automotive/amphicar/search.html
> For more information about this List and other available services
> visit:
> http://groups.yahoo.com/group/amphicar-lovers/
> Any other issues may be addressed to the List owner (Mike Israel)
at:
> amphicar770@y...
>
>
>
>
>
>
> --------------------------------------------------------------------
----------
> YAHOO! GROUPS LINKS
>
> a.. Visit your group "amphicar-lovers" on the web.
>
> b.. To unsubscribe from this group, send an email to:
> amphicar-lovers-unsubscribe@yahoogroups.com
>
> c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms
of Service.
>
>
> --------------------------------------------------------------------
----------
 
M

Mike Israel

Guest
Re: Re: Conversion to negative ground

I recently visited another Amphi owner and helped him
make some tweaks to his vehicle. Turns out his
battery was hooked up backwards, had been that way for
a good year. Apparently his "mechanic" is unfamiliar
with positive ground. Anyway, even that did not
appear to have damaged anything including the coil.
(OK, his gas gauge does not work but not sure if that
is at all related).

Mike I.

--- John Friese <jfriese@mindspring.com> wrote:

> Bill,
>
> I put the coil replacement issue in the area of
> "urban legend" since
> I can't imagine why such a failure would occur.
> I'm not even sure
> why switching the wires on the primary posts would
> make much
> difference but if that were done, the coil wouldn't
> know the polarity
> had been switched.
>
> I've never had a coil failure and I know that the
> coil in one of my
> cars was also in the car before it's conversion,
> four years ago.
> It's a Bosch brand coil though and I doubt it was
> the original coil
> in the car when the car was new.
>
> John Friese
>
> 67 White
> 67 Red
>
>
 
D

David Chapman

Guest
Re: Re: Conversion to negative ground

<table bgColor="#ffffff">
<font face="Arial" size="2">John, A modern coil like the Bosch may be OK but there is a real problem with the original silver Lucas coils that were fitted to Amphicars and many other British cars, This came out in the UK press in the 80s when many people were converting to negative earth to avoid blowing up phone chargers etc. It was bad enough to show on the reason stats published by breakdown organisations like the AA. </font>
<font face="Arial" size="2"></font>
<font face="Arial" size="2">I recall Lucas technical produced a document explaining why. It is something to do with the insulation between the windings in the coil. The reverse of polarity causes something to happen at a molecular level and after a few weeks the insulation fails and they get hotter and hotter until they totallystop working. Another reason to change, and something that can be measured, is with the Lucas coil the spark output drops significantly when polarity is changed.</font>
<font face="Arial" size="2"></font>
<font face="Arial" size="2">David C</font>
<font face="Arial" size="2"></font>
<font face="Arial" size="2"></font>
<blockquote style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<div style="FONT: 10pt arial">----- Original Message -----
<div style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black">From: John Friese
<div style="FONT: 10pt arial">To: amphicar-lovers@yahoogroups.com
<div style="FONT: 10pt arial">Sent: Wednesday, July 06, 2005 5:44 PM
<div style="FONT: 10pt arial">Subject: [amphicar-lovers] Re: Conversion to negative ground

<tt>Bill,

I put the coil replacement issue in the area of "urban legend" since
I can't imagine why such a failure would occur. I'm not even sure
why switching the wires on the primary posts would make much
difference but if that were done, the coil wouldn't know the polarity
had been switched.

I've never had a coil failure and I know that the coil in one of my
cars was also in the car before it's conversion, four years ago.
It's a Bosch brand coil though and I doubt it was the original coil
in the car when the car was new.

John Friese

67 White
67 Red



--- In amphicar-lovers@yahoogroups.com, "Bill Connelly"
<billiam@e...> wrote:
> Richard:
>
> You may also want to replace your ignition coil, or at least carry
a spare at all times where you can easily get at it, since coil
failure shortly after such positive-to-negative ground conversions
seems to be such a common occurrence as to be almost a given.
>
> ~Bilgy
> ----- Original Message -----
> From: a_colo_native
> To: amphicar-lovers@yahoogroups.com
> Sent: Monday, June 27, 2005 11:13 AM
> Subject: [amphicar-lovers] Re: Conversion to negative ground
>
>
> > Hi everyone. I've arranged to have my car converted to
negative
> > ground. The shop that also installed an electronic ignition
now
> says
> > that my fuel gage does not work. I've also learned my wipers
might
> > not "park" correctly after being turned on then off.
>
> Richard - Look at the URL below from my personal site I have
dealing
> with this issue. iT should answer your questions. Everything
should
> work fine (Clock and blower motors too). The wipers will tend to
park
> a little above (about an inch) where they used to park. The fuel
gage
> will need re-wired. It is a complicated task outlined in the page
too.
>
> http://www.amphicar.net/minnow/Neg_wiring.htm
>
> John Bevins
> Rocky Mountain Amphicar
>
>
>
>
> THE AMPHICAR-LOVERS LIST
> ~~~~~~~~~~~~~~~~~~~~~~~
> Please support our sponsors while ensuring the very best
restoration services for your Amphicar. Please pay a visit to:
> http://www.midwestamphicar.com
>
> To Unsubscribe from this List, just send a blank email to:
> amphicar-lovers-unsubscribe@yahoogroups.com
> Before posting requests for information, please check the List
> Archives:
> http://www.escribe.com/automotive/amphicar/search.html
> For more information about this List and other available services
> visit:
> http://groups.yahoo.com/group/amphicar-lovers/
> Any other issues may be addressed to the List owner (Mike Israel)
at:
> amphicar770@y...
>
>
>
>
>
>
> --------------------------------------------------------------------
----------
> YAHOO! GROUPS LINKS
>
> a.. Visit your group "amphicar-lovers" on the web.
>
> b.. To unsubscribe from this group, send an email to:
> amphicar-lovers-unsubscribe@yahoogroups.com
>
> c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms
of Service.
>
>
> --------------------------------------------------------------------
----------


</tt>

<tt>THE AMPHICAR-LOVERS LIST
~~~~~~~~~~~~~~~~~~~~~~~
Please support our sponsors while ensuring the very best restoration services for your Amphicar. Please pay a visit to:
http://www.midwestamphicar.com

To Unsubscribe from this List, just send a blank email to:
amphicar-lovers-unsubscribe@yahoogroups.com
Before posting requests for information, please check the List
Archives:
http://www.escribe.com/automotive/amphicar/search.html
For more information about this List and other available services
visit:
http://groups.yahoo.com/group/amphicar-lovers/
Any other issues may be addressed to the List owner (Mike Israel) at:
amphicar770@yahoo.com


</tt>
 
J

John Friese

Guest
Hi Dave,

But the coils aren't supposed to be connected to the outer case and I
wouldn't think the potting material around the coils would understand
polarity. If you reversed the wires on the primary leads, the coil
shouldn't know that anything has changed in the car. Weird.

John Friese



--- In amphicar-lovers@yahoogroups.com, "David Chapman" <david@m...>
wrote:
> John, A modern coil like the Bosch may be OK but there is a real
problem with the original silver Lucas coils that were fitted to
Amphicars and many other British cars, This came out in the UK press
in the 80s when many people were converting to negative earth to
avoid blowing up phone chargers etc. It was bad enough to show on the
reason stats published by breakdown organisations like the AA.
>
> I recall Lucas technical produced a document explaining why. It is
something to do with the insulation between the windings in the coil.
The reverse of polarity causes something to happen at a molecular
level and after a few weeks the insulation fails and they get hotter
and hotter until they totally stop working. Another reason to change,
and something that can be measured, is with the Lucas coil the spark
output drops significantly when polarity is changed.
>
> David C
>
>
> ----- Original Message -----
> From: John Friese
> To: amphicar-lovers@yahoogroups.com
> Sent: Wednesday, July 06, 2005 5:44 PM
> Subject: [amphicar-lovers] Re: Conversion to negative ground
>
>
> Bill,
>
> I put the coil replacement issue in the area of "urban legend"
since
> I can't imagine why such a failure would occur. I'm not even
sure
> why switching the wires on the primary posts would make much
> difference but if that were done, the coil wouldn't know the
polarity
> had been switched.
>
> I've never had a coil failure and I know that the coil in one of
my
> cars was also in the car before it's conversion, four years ago.
> It's a Bosch brand coil though and I doubt it was the original
coil
> in the car when the car was new.
>
> John Friese
>
> 67 White
> 67 Red
>
>
>
> --- In amphicar-lovers@yahoogroups.com, "Bill Connelly"
> <billiam@e...> wrote:
> > Richard:
> >
> > You may also want to replace your ignition coil, or at least
carry
> a spare at all times where you can easily get at it, since coil
> failure shortly after such positive-to-negative ground
conversions
> seems to be such a common occurrence as to be almost a given.
> >
> > ~Bilgy
> > ----- Original Message -----
> > From: a_colo_native
> > To: amphicar-lovers@yahoogroups.com
> > Sent: Monday, June 27, 2005 11:13 AM
> > Subject: [amphicar-lovers] Re: Conversion to negative ground
> >
> >
> > > Hi everyone. I've arranged to have my car converted to
> negative
> > > ground. The shop that also installed an electronic
ignition
> now
> > says
> > > that my fuel gage does not work. I've also learned my
wipers
> might
> > > not "park" correctly after being turned on then off.
> >
> > Richard - Look at the URL below from my personal site I have
> dealing
> > with this issue. iT should answer your questions. Everything
> should
> > work fine (Clock and blower motors too). The wipers will tend
to
> park
> > a little above (about an inch) where they used to park. The
fuel
> gage
> > will need re-wired. It is a complicated task outlined in the
page
> too.
> >
> > http://www.amphicar.net/minnow/Neg_wiring.htm
> >
> > John Bevins
> > Rocky Mountain Amphicar
> >
> >
> >
> >
> > THE AMPHICAR-LOVERS LIST
> > ~~~~~~~~~~~~~~~~~~~~~~~
> > Please support our sponsors while ensuring the very best
> restoration services for your Amphicar. Please pay a visit to:
> > http://www.midwestamphicar.com
> >
> > To Unsubscribe from this List, just send a blank email to:
> > amphicar-lovers-unsubscribe@yahoogroups.com
> > Before posting requests for information, please check the
List
> > Archives:
> > http://www.escribe.com/automotive/amphicar/search.html
> > For more information about this List and other available
services
> > visit:
> > http://groups.yahoo.com/group/amphicar-lovers/
> > Any other issues may be addressed to the List owner (Mike
Israel)
> at:
> > amphicar770@y...
> >
> >
> >
> >
> >
> >
> > ----------------------------------------------------------------
----
> ----------
> > YAHOO! GROUPS LINKS
> >
> > a.. Visit your group "amphicar-lovers" on the web.
> >
> > b.. To unsubscribe from this group, send an email to:
> > amphicar-lovers-unsubscribe@yahoogroups.com
> >
> > c.. Your use of Yahoo! Groups is subject to the Yahoo!
Terms
> of Service.
> >
> >
> > ----------------------------------------------------------------
----
> ----------
>
>
>
>
> THE AMPHICAR-LOVERS LIST
> ~~~~~~~~~~~~~~~~~~~~~~~
> Please support our sponsors while ensuring the very best
restoration services for your Amphicar. Please pay a visit to:
> http://www.midwestamphicar.com
>
> To Unsubscribe from this List, just send a blank email to:
> amphicar-lovers-unsubscribe@yahoogroups.com
> Before posting requests for information, please check the List
> Archives:
> http://www.escribe.com/automotive/amphicar/search.html
> For more information about this List and other available services
> visit:
> http://groups.yahoo.com/group/amphicar-lovers/
> Any other issues may be addressed to the List owner (Mike Israel)
at:
> amphicar770@y...
>
>
>
>
>
>
> --------------------------------------------------------------------
----------
> YAHOO! GROUPS LINKS
>
> a.. Visit your group "amphicar-lovers" on the web.
>
> b.. To unsubscribe from this group, send an email to:
> amphicar-lovers-unsubscribe@yahoogroups.com
>
> c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms
of Service.
>
>
> --------------------------------------------------------------------
----------
 
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