Yes, it is in the brown/yellow, I should've said.
PaulH.
----- Original Message -----
From: Robert C. Galli <rcgalli@ix.netcom.com>
To: Paul Hunt <paul.hunt1@virgin.net>; Dave <hearts@radiks.net>; MG Digest
<mgs@autox.team.net>
Sent: Wednesday, May 17, 2000 12:39 AM
Subject: Re: Lucas Says Keep Running!
> By gum, I forgot about the diode on the alternator - I had the same
problem
> and the diode (Radio Shack) worked like a charm (wish I could remember but
> i think it was on the yellow-brown Alt wire). I'd also check the
> anti-runon valve, if fitted.
> Bob Galli
> '78 B
>
> At 16:59 05/15/2000 +0100, Paul Hunt wrote:
> >A 76 should have an ignition relay, and with a new alternator the North
> >American wiring (UK is done differently) will likely give this problem.
> >
> >What happens is that the ignition warning light (and the fuel pump) on
North
> >American cars with an ignition relay is wired directly to the white i.e.
the
> >ignition switch and hence the coil of the ignition relay. The leakage
> >through the warning light from the 14v on the alternator field connection
> >(with the engine running) seems to be enough to hold the ignition relay
> >operated and hence the engine running (that is, normal running not
> >Dieseling) when the ignition switch is off. You may find that as soon as
> >the fuel pump gives a click the relay will drop out and the engine will
> >stop, but that is only a theory. The usually recommended fix is to
install
> >a diode in series with the ignition warning light such that the light
still
> >glows when the ignition is first turned on, and this will stop the
reverse
> >leakage from the alt through the lamp to the relay.
> >
> >UK cars have the warning light, and the fuel pump, connected to the
contacts
> >of the relay i.e. the white brown even though these two items still have
> >white wires running to them.
> >
> >Since this is such an obvious problem I can only assume that the original
> >alts did not allow sufficient leakage to hold the relay operated whereas
> >current (!) ones do. Either that or the relay with age has a tendency to
> >'stick' with the leakage current whereas it didn't when new.
> >
> >PaulH.
> >
> >----- Original Message -----
> >From: Dave <hearts@radiks.net>
> >To: MG Digest <mgs@autox.team.net>
> >Sent: Sunday, May 14, 2000 5:44 PM
> >Subject: Lucas Says Keep Running!
> >
> >
> > > Sir Lucas has struck right when I thought I had all the electrical
> > > straightened out. Heres the deal. Turn the key to on the ignition
> > > light comes on. Turn to start,car starts fine. Let run. Turn key
back
> > > off and car keeps running. Have checked all wiring harnesses for
shorts
> > > before and all are ok Car has new alternater. Fuse box contacts are
> > > all cleaned. Now this? Any ideas appreciated.
> > >
> > > Dave Ciaccio
> > > '76B
> > >
> > >
>
>
>
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