[Mgs] Ignition light always on, low glow

[oliver]

similar vein - sometimes my light goes on, generally at idle, then goes away 
once i rev the engine or get going.  should i worry?
----- Original Message ----- 
From: <palte at gmx.net>
To: <mgs at autox.team.net>
Sent: Monday, September 10, 2007 9:23 AM
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)