Re: Driving an HEI Module with other signals

[Shannen Durphey <shannen@grolen.com>]

I have driven an HEI module with a VSS connected to both pickup coil
leads, a Test light connected from battery + to pickup coil +, leaving
the - terminal open (quick module test), with the tach lead in a 75
Datsun pickup connected to  pickup coil+, and the - terminal open, and
with the + from the pickup coil connection wired directly to the coil
negative line in that same pickup.  The module was piggybacked to the
existing ignition system to fire an additional coil.

 I'm currently using a vss signal generator on my test bench to drive
the module.  The only correction is that your (G) wire should connect
to the ecm.  GM ecm's have a loction for this.  I would not use points
unless I had to, but you could make the module fire the coil.  Except
for the test bench, the only thing I was interested in was making a
coil spark.  REF pulses, ignition timing were of no concern, so I
never checked the REF signal shape or timing.
Shannen

Peter Gargano wrote:
> 
> I'm wondering if it's possible to drive an HEI (High Energy
> Ignition) module with other than a reluctor pickup coil.
> The HEI module I'm thinking of has three groups of connectors:
> 
>  1. (+) to battery
>     (C) to Coil
> 
>  2. (G) Ground
>     (B) Bypass control
>     (R) Reference to ECU
>     (E) EST (Timing from ECU)
> 
>  3. (P) \_ to reluctor coil
>     (N) /
> 
> I'm wondering if it could be made to work with an existing
> mechanical points, and an interface/translator circuit.
> Or, perhaps made to work with a hall effect/optical sensor?
> 
> Thank in advance.
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