Output of distributer's magnetic pickup

[Paul E. Bueltmann III]

Raymond C Drouillard wrote:
> 
> On Wed, 15 Apr 1998 01:07:37 -0600 Shannen Durphey <shannen at mcn.net>
> writes:
> >Raymond C Drouillard wrote:
> >>
> >> <snip>
> >> The module I have has five pins on one side and two on the other.  The
> >> "two pin" side goes to the coil.  Three pins on the "five pin" side go
> to
> >> the ECM (signal out, signal in, and a 5v level that will cause the ECM
> to
> >> be bypassed if it's missing).  The other two pins go to the magnetic
> >> pickup coil in the distributer.  I'm trying to feed the signal from a
> >> Motorcraft Duraspark distributer into those two pins.  I tried both
> >> polarities.
> >>
> >> I would measure the voltage myself, but I don't have access to a
> 'scope.
> >>
> >> Ray Drouillard
> >>
> >I seem to remember that 5-7VAC is enough to trigger the
> >module.  If you have a DVOM you can measure the voltage from
> >the distributor.
> >
> >Do you have the module powered up?  One of the wires from
> >the coil is ign+ to turn on the module, the other is coil-.
> >
> >Shannen
> 
> Uh...... ya busted me!
> 
> That was indeed the problem with my first try <donning conical hat>.  I
> couldn't get the GM distributer that I pulled the module from to fire it.
> 
> A couple days later, it dawned on me that I need to "plug it in".  I ran
> a wire from an ignition source to the "+" pin, hooked up the Holley, and
> tried it.  It fired the Jacobs ignition, and the Holley dutifully
> injected fuel down the throttle body.
> 
> Still, I can't get the Ford distributer to fire it.  Maybe I'm missing
> something very basic (again)  <:-)
> 
> Ray Drouillard
> 
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I mesured a five and two wire module and I got 3.8 volts at the c anf +
pin at low rpm and 5.75 ant higher rpm hope this helps

later paulb3 at gte.net