Is your ignition warning light working correctly? The light is necessary to
supply the initial excitation to the field of the alternator which starts it
charging. However on a used alternator you may well find that charging will
start anyway but not until 3000 rpm or so.
The ignition warning light should glow when you first turn on the ignition.
Once the engine starts the light should go out over 1000 rpm or so. Then
when you switch the ignition off the light should glow again until the
engine stops spinning (this may not happen on cars with an ignition relay).
Also check that you have 12v on the thick brown(s) at the alternator plug.
If all that is OK, with the engine running, measure the voltage at the thick
brown at the alternator plug. If it is still 12v then the alternator is bad
PaulH.
-----Original Message-----
From: Steven Miller <bonding@hotmail.com>
To: mgs@autox.team.net <mgs@autox.team.net>
Cc: smille@earthlink.net <smille@earthlink.net>
Date: 10 November 1999 16:47
Subject: Charging problems
> Ok, for the most part I am lurker, I find that eventually most of my
>questions are answered before I have to ask them. With that said, I have
>been having problems with the charging system on my midget. Ok so the
>problem is that it is not charging. So here are the spec's. It is a 1974
>MG midget with a 1275 motor. (chrome bumpers and all). It has a new
>Battery, and alternator. As far as I can tell all of the wiring is good.
>Does anyone have any thoughts as to what else could cause the problem. I
am
>bringing the alternator in to be tested today, because I am not getting
>anything over 12 volts off of it. With all of this said, as far as I can
>tell the voltage regulator is built into the alternator.
> Not a well organized letter, but if anyone has anythoughts as to where
I
>should look please email either on the list or at:
>Smille@earthlink.net
> or
>Bonding@hotmail.com
>
>Please respond, this is currently my daily driver!
>
>Thanks for all of your help
>Steve Miller
>
>'74 midget -no charge
>'82 lebaron convertible -no headgasket, no carberator,no camshaft
>
>P.S. Patience is for people with too much free time.....
>
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