True Alex, and I should have said that while it will get your attention it
will not kill you as higher voltage might, but it can still start a fire,
damage insulation, etc.
Best--Michael Oritt
On Tue, Oct 24, 2017 at 8:39 AM, Alex <alexmm at roadrunner.com> wrote:
> *Michael, it's not a matter of voltage (12V), but how much current will
> flow! High current at low voltages can be destructive, even resulting in
> heat and fire.*
>
>
>
>
>
>
> *== Alex in Maine "The Blue Mainie," 1960 Austin Healey 3000 BT7
> "Conkling," 1946 M.G. TC #1321 Former owner 1957 A-H 100-6, 1967 A-H
> BJ8, 1965 MG Midget ?(???)? http://ai2q.org/ <http://ai2q.org/>*
>
>
>
> ----- Original Message -----
> *From:* Michael Oritt <michael.oritt at gmail.com>
> *To:* Stephen Hutchings <s.hutchings at rogers.com>
> *Cc:* Austin Healey <healeys at autox.team.net>
> *Sent:* Monday, October 23, 2017 2:42 PM
> *Subject:* Re: [Healeys] Radio,changing from positive ground to negative
> ground?
>
> I believe the antenna must be shielded as well. This happens
> automatically with the usual plastic or hard rubber mounting grommet but
> should the exterior of the antenna somehow touch either bare metal on the
> body or elsewhere a short will likely occur. It's only 12 volts so it
> won't be harmful but it will certainly get one's attention if the
> connection is good enough.
>
> Best--Michael Oritt
>
> On Sun, Oct 22, 2017 at 11:01 PM, <s.hutchings at rogers.com> wrote:
>
>> I had an old Austin 1800 with positive ground- I just isolated the
>> negative ground radio from the chassis and ran it as negative ground. It
>> depends on the radio design whether you have enough room to sheath it in
>> something like very thin plywood.
>>
>> Stephen BJ8
>>
>> Sent from my iPad
>>
>> > On Oct 22, 2017, at 1:38 PM, <glemon at neb.rr.com> <glemon at neb.rr.com>
>> wrote:
>> >
>> > I used a polarity converter many years ago when I put a "modern" am fm
>> cassette in my 67 Sprite (Pioneer KP5500, the things you remember). The
>> inverter ran all the time and made a high pitched slightly audible squeal.
>> After it drained my battery I added an inline switch. It also would cut
>> out for a second if there were a sudden voltage change, such as tapping the
>> brake lights.
>> >
>> > I messed around with the voltage regulator to try to compensate for the
>> voltage drop, no help, screwed that up too.
>> >
>> > An all (many) subsequent cars I just switched polarity, much easier and
>> never any problems.
>> >
>> > Greg Lemon
>> >
>> > ---- Oudesluys <coudesluijs at chello.nl> wrote:
>> >> There are also separate radio polarity converters around.
>> >> Kees Oudesluijs
>> >>
>> >>
>> >> Op 21-10-2017 om 10:57 schreef Bob Simmen:
>> >>>
>> >>> Is there a way to change an original positive ground radio to negative
>> >>> ground on my BJ8?
>> >>>
>> >>> Thanks in advance.
>> >>>
>> >>> Bob
>> >>>
>> >>>
>> >>>
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