Presumably because the radio, or speakers, or both, are grounded through
the case, or at least are not insulated against being grounded through
the case. But don't take my word for it -- go ahead and buy an expensive
CD player, and then let the shop's installer tell you "no way"...
;-)
Believe me, I thought like you until I tried it...
Walt Goddard had this to say:
>All,
>
>Maybe I'm missing something here, but what difference does it make to the
>radio whether the positive or negative battery terminal is hooked to ground
>as long as the positive and ground on the radio are hooked to the correct
>places? As long as positive is hooked to positive and negative is hooked to
>negative, the radio has no way of knowing HOW it's connected, just WHERE its
>connected, and should function correctly. Someone help me out here if I'm
>wrong.
>
>Walt Goddard
>waltcpa@sierra.net
>
>-----Original Message-----
>From: Max Heim <mvheim@studiolimage.com>
>To: MG List <mgs@autox.team.net>
>Date: Saturday, April 03, 1999 5:36 PM
>Subject: Re: Original Equipment BL radios
>
>
>>You pretty much are stuck using a pos. ground radio in a pos. ground car.
>>If you are determined to add modern sound equipment, converting to
>>negative ground is dead simple, except for the tach. The Moss catalog has
>>the procedure in one of those notes. My own experience would suggest it's
>>scarcely worth the trouble putting a stereo in a B since you can only
>>appreciate it when stationary, but perhaps a GT isn't quite as noisy.
>>IMO, YMMV
>>
>>David Councill had this to say:
>>>
>>>I still have the original British Leyland am/fm radio from the 71BGT I
>>>bought in '77.
>>>
>>>My newly acquired 67 BGT still has a functional AM British Motor Corp
>radio
>>>in it. Which I would replace with an am/fm cassette player - however, the
>>>67 also uses the positive ground.
>>>
>>>Any tips from you others on the positive ground when it comes to replacing
>>>the radio? I've only done it once and ended up shorting out the 8-track
>>>player and frying some wires, thereupon giving up (yes, this was eons
>ago).
>>>
>>>
>>>David
>>>67BGT
>>>71BGT
>>>
>>
>>
>>--
>>
>>Max Heim
>>'66 MGB GHN3L76149
>>Runs great,
>>looks particularly bad since some SUV clown backed into it.
>>If you're near Mountain View, CA,
>>it's the red one with the silver bootlid.
>>
>>
>
>
--
Max Heim
'66 MGB GHN3L76149
Runs great,
looks particularly bad since some SUV clown backed into it.
If you're near Mountain View, CA,
it's the red one with the silver bootlid.
|