[TR] Radio Question

Geo & Kathleen Hahn ahwahnee at cybertrails.com
Sun Feb 10 16:39:53 MST 2008


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 at comcast.net>
To: "Triumph List" <triumphs at 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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