Peter,
That is pretty conclusive and even eliminates the possible error in printing
the wiring diagram.
Thank you for your input.
Pip
AUSTRALIA
----- Original Message -----
From: Peter Green
To: Pip Bucknell ; MMM List UK
Cc: mg-mmm@autox.team.net
Sent: Friday, November 01, 2002 8:46 AM
Subject: Re: positive or Negative
Pip,
John James is correct. I have gone one better than him and have looked at
the wiring diagrams in original Instruction Manuals.
The J type and L type manuals clearly show the battery terminals marked with
+ and - ( Positive and Negative) and the negative goes to earth.
The P type and N type manuals do not have the battery terminals marked BUT
the accessory plug on the octagonal switch panel is clearly marked + and - and
if you follow the wires back to the battery the + wire goes to the terminal
that does not go to earth.
Peter Green.
----- Original Message -----
From: Pip Bucknell
To: MMM List UK
Sent: Thursday, October 31, 2002 9:56 PM
Subject: positive or Negative
----- Original Message sent to Brian Rainbow
Brian,
The messages, below, are interesting.
My P-type manual is 2000 klms away with my son & the car. I do have J3/4,
L,
K3 & N Manual here. Sure wish I had an R-type manual.
How do I tell from the wiring diagram, if it is negative or positive
earth.
From memory, the P-type wiring diagram does not show what colour cable
was
used from battery to front of car.
Anyhow, it is an interesting subject
Thanks
Pip
AUSTRALIA
Brian
If you check the wiring diagrams for the MMM cars you will see that they
were
negative ground from the begaining.
Jerry
Brian J Rainbow wrote:
> Mike,
> the P Types, N Types, TA/B/C/D/F were all positive earth, as
were
> the MGA's...Early MGB's were also positive earth until 1968(?) when
they
> switched from a dynamo to an alternator and converted to negative
earth...
> Don't believe these guys when they say all MMM are negative earth....
Mind
> you quite a lot of MMM cars have been converted to negative earth so
that
> they can run an alternator driven off the back axle. and just have a
dummy
> dymamo with thicker shaft to take the drive from crankshaft to
camshaft.....
> This will no doubt upset the purists, but have a nose under the rear of
a
> few well presented MMM cars next time you are at a large gathering!! It
sure
> makes them a lot more usable, especially at night with decent halogen
> headlamp bulbs and uprated rear lamp bulbs, better to be safe than
sorry...
>
> Best wishes, Brian Rainbow PA0777 and TA2551
> ----- Original Message -----
> From: Mike Hughes <hughes.c.m@worldnet.att.net>
> To: <mg-mmm@autox.team.net>
> Sent: Thursday, October 31, 2002 6:43 PM
> Subject: Re: MMMs are Negative Earth
>
> > Thanks for all the responses. My L-1 wiring diagram is almost
unreadable
> as
> > it is a copy of a copy of a copy.... Does this mean that my TA is
> Negative
> > earth also?
> >
> > I will have to come up with a new motto. I keep on telling all my
> friends
> > who have newer M.G.s with alternators or who have changed their older
cars
> > over to negative ground that "Positive Earth is a state of mind!"
> >
> > - Mike Hughes -t?t-
> >
> > /// unsubscribe/change address requests to majordomo@autox.team.net
or
> try
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