[Mgs] 1974 chrome bumper MGB ignition coil

i erbs eyera3000 at gmail.com
Fri Jul 27 22:34:30 MDT 2018


I have been sorting this out too on my 67. I just realized it had a modern
stereo, so must have been switched to neg earth. I did that on my Healey
when I was young and wanted a stereo. Now good for led lights and  cb radio.

Ira Erbs
Portland, OR
typos and artifacts are the fault of my phone

On Fri, Jul 27, 2018, 8:27 PM Barney Gaylord via Mgs <mgs at autox.team.net>
wrote:

> Really?  Hadn't noticed.  All MGB were negative earth from 1968 on, with
> introduction of alternators.  Positive earth has "+" of coil going to the
> distributor.  Negative earth has "i" of coil going to the distributor.
>
>
> At 04:11 PM 7/26/2018 -0700, Max Heim via Mgs wrote:
>
> One annoying thing about the MGB wiring diagram is that it does not label
> the terminals on the coil “+†or “-". I was wondering if Barney could
> supply that deficiency?
>
> --
> Max Heim
> '66 MGB
>
>
>
> On Jul 26, 2018, at 1:27 PM, Barney Gaylord via Mgs <mgs at autox.team.net>
> wrote:
>
>
> Two W/B wires there on one terminal, one from coil "-" to distributor, and
> one from coil "-" to tachometer.
>
> See here:
> http://chicagolandmgclub.com/techtips/mgb/mgb_wd.html
> http://chicagolandmgclub.com/techtips/mgb/pdf/mgb_wd16.pdf
>
>
>
> At 03:01 PM 7/26/2018 -0400, laf48--- via Mgs wrote:
>
> Good day Gents, on the distributor side of the coil is the tachometer
> lead, and another wire on the same terminal, where does the second wire go
> to?
> Thanks
> Len Fanelli
> Abingdon Performance LTD.
>
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