My 71 GT had the same and besides the brushes and the diode pack, the rings
had to be replaced, whereto the brushes are making contact to.
Bit more work - I had it done by a specialist - I needed more tools than you
recommended.
Cheers,
Hans
----- Original Message -----
From: <palte@gmx.net>
To: <mgs@autox.team.net>
Sent: Monday, September 10, 2007 4:23 PM
Subject: Re: [Mgs] Ignition light always on, low glow
>> During the weekend the Ignition light on my 71 MGB GT has started
>> showing a light glow all the time, at all engine speeds.
>> Is it time for an Alternator rebuild?
>>
>
> If the light is glowing only slightly, one of the diodes may have gone
> and then the rectifier pack has to be replaced.
> This is not really a DIY job, but then it is not that urgent.
>
> If the light stays on like it does when you have just switched on the
> ignition, then it is most likely that the carbon brushes are shot (BTDT).
>
> They can be replaced easily and cheaply by yourself (BPF: $5)
> (You need a 1/4"AF socket to remove various covers)
>
>
> Bert
> Holland 70 B
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