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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