All the Lucas coils that I know of that are marked CB and SW are
positive ground coils.
David Nock
British Car Specialists
Stockton Ca 95205
209-948-8767
www.britishcarspecialists.com
..
..
On Apr 14, 2009, at 1:05 AM, Alan Seigrist wrote:
> That's provided you have a coil marked for a positive ground car. If
> your coil is for a negative ground car the Contact Breaker and SW
> markings are reversed.
>
> On 4/14/09, WILLIAM B LAWRENCE <ynotink@msn.com> wrote:
>> SW means "switch" and was the terminal attached to the ignition
>> switch. On
>> our
>> (originally) positive ground cars that terminal would be negative.
>> CB means
>> "contact breaker" (points). The points are at the end of the ignition
>> circuit
>> and are the grounding point. Again, since the car was originally
>> positive
>> ground, CB is the positive terminal.
>> Bill Lawrence
>>
>>> From: ourxke@hotmail.com
>>> To: healeys@autox.team.net
>>> Date: Mon, 13 Apr 2009 18:48:40 -0400
>>> Subject: [Healeys] Coil Terminals
>>>
>>> The terminals are marked either - or +. Alternatively they are
>>> marked SW
>> and
>>> CB. I am putting in a new coil. Which one is the positive and
>>> which is the
>>> negative?
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>
> --
> Sent from my mobile device
>
> Alan
>
> '52 A90
> '53 BN1
> '64 BJ8
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