Bill --
I assume you know a 70 TR6 would have left Coventry with negative ground but
how do you know that the radio you have is for that car/year?
Since these were (I think) dealer fitment I am not sure there would be any
indication what it was for.
I suppose the relevant question is what is the polarity of the radio you
have. FWIW -- many of the radios installed back in the day had the ability
to be used for either polarity by changing some switch on the radio.
In the case of the 'original' radio in my TR4 (positive ground) this was
managed by removing a round plug (maybe a half inch across) and reinserting
it in a different orientation.
You might look for such a fitting on your unit. Failing that, you might
look for any indication of polarity on the body of the radio. If none, then
you probably want to quote whatever marks, numbers etc you do find.
In my case the car had had the battery installed backwards yet miraculously
the radio worked fine when the positive ground polarity was restored. I
wouldn't count on such luck though so you do want to very sure before you
connect it.
Geo
----- Original Message -----
From: "Bill & AnnaBelle" <anabil007@comcast.net>
To: "Triumph List" <triumphs@autox.team.net>
Sent: Sunday, February 10, 2008 3:55 PM
Subject: [TR] Radio Question
> Hi folks,
> On an original 1970 TR6, Standard Triumph AM radio ...
> positive or negative ground??
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