Switches or relays?

Ludis Langens ludis at cruzers.com
Fri Nov 9 08:28:16 GMT 2001


Mark Bottorff wrote:
> 
> Its those little switches that activate the coil that
> I want to switch. However with 6 coil packs and 2
> plugs leads on each pack, I'll have 6 left over plug
> leads. So what else I wanted to do was to Y the 2 plug
> leads on each connector together to 1 plug. All of
> this is just in my head and I have no idea if it will
> work. Which is why I asking it on this list.

I think I'm beginning to understand what you are trying to do:  Your car
had three coil packs running six cylinders in a waste spark
configuration.  For some reason, you want to double the number of coils
and run them one per cylinder.  Your problem is that each coil has two
HV terminals and you don't know how to connect the "extra" terminal.

I suggest you read up on how waste spark systems work.  The two HV
terminals are not "seperate" spark outputs.**  Instead, they are in the
same circuit.  The waste spark system relies upon the "inactive" spark
plug to complete the circuit to ground.  So, you need to wire one of the
terminals on each coil to ground.  Actually, you need to wire them to a
spark gap to ground.

** An analogy:  You seem to think the HV terminals are each the
equivalent of a stick welder's welding rod.  Instead, one is the rod and
the other is the ground clamp.  They trade off functions with every spark.

-- 
Ludis Langens                               ludis (at) cruzers (dot) com
Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/
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