The car could be a reclassified '66, or the previous owners could have done a
modification, or the title could have been lost and replaced by a newer one,
etc.
The question is still, "why does he measure 12 volts from the radio chassis to
a car body ground?" He should be displaying 0.000 vDC. His reading indicates
either an internal radio short, or a polarity error in the car. How is the
battery connected? Is the + terminal connected to the starter or the chassis,
or is it the negative terminal of the battery that is connected so?
Jim
Lawrie Alexander wrote:
> Paul, I'm afraid your supposition is wrong. MGBs changed to negative ground
> at the end of the 1967 model year.
>
> Lawrie
> British Sportscar Center
>
> -----Original Message-----
> From: Paul Nelson <ya632@victoria.tc.ca>
> To: mistebar@juno.com <mistebar@juno.com>; MGS@autox.team.net
> <MGS@autox.team.net>
> Date: Friday, January 28, 2000 9:52 PM
> Subject: Re: Radio
>
> >At 20:43 1/28/00 -0800, mistebar@juno.com wrote:
> >>I was just going to do a simple project on our 1968 MGB-GT and put in a
> >>radio. After seeing the comments, I think I need help. I replaced the old
> >>radio with a new one using the same wiring. The light on the unit
> >>"pulsates", but does not turn on. I don't know if the antenna is grounded
> >>or not. When I touch the radio body with a voltmeter and ground it, there
> >>is 12 volts. What am I doing wrong?
> >
> >
> >Seems like the 68's were still positive ground, weren't they?
> >Paul
> >
> >
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