Re: Basic coil questions 101

["Dean W. Cains" <dwc@domain.elided>]

Hi Biba:

The primary side is always the low voltage (i.e. 12 V or 6 V) circuit, 
while the secondary is the high voltage side (i.e. that which connects to 
the distributor rotor and eventually the spark plugs).  One side of the 
points is always grounded (through being screwed to the distributor body), 
so the wire from the other side those points goes to the coil primary 
circuit - - Negative terminal on negative ground cars, positive on positive 
ground cars.  The remaining terminal (be it  + or -) on the primary circuit 
of the coil goes to 12V and is switched on/off by the ignition key.

BTW, Biba, did you ever find me that Shankle Heel and Toe kit for my Spider?

Regards,

Dean W. Cains
Lutz, FL
'74 Spider Veloce


At 06:52 PM 3/5/2002, you wrote:
>Date: Tue, 05 Mar 2002 13:34:43 -0700
>From: alfacybersite <acs@domain.elided>
>Subject: Basic coil questions 101
>
>I've always admired those in the electrical / ignition 'know'. I don't
>have it, and most likely never will.
>
>Please help. All I want to know is when I pick up a coil, I want to know
>what goes where.
>
>Please no theoretical lectures, just want numbers.
>
>I'm sure there must be a kazillion variations, but out of the three
>coils I have close at hand, please group the numbers (and yes I'm aware
>there's a + in all three which should give me a good hint, but do want
>to verify.
>
>Coil A (Lucas): + &
>
>Coil B (Marelli) 1 / D & 16 / B+
>
>Coil C (Bosch) /1 & + / 15
>
>Okay, I'm guessing that's a no brainer. But please don't just skip to
>the next question.
>
>Include in each 'group' which is the secondary winding and which is the
>primary winding.
>
>Now, based on a negative ground vehicle, determine the appropriate
>'group' which goes to the distributor.
>
>Now, based on a positive ground vehicle, determine the appropriate
>'group' which goes to the distributor.
>
>Thanking all of you marvelous students in the arcane art (will never
>believe it's actually a science) of electricity in advance,
>
>Biba
>Irwindale, CA USA

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