Many thanks Bob and Udo
Yes, I was missing a path to ground. I hooked up the now redundant 'points
wire' from the +ve terminal to the chassis and got my spark.
Thanks
Paul Leeks
100/ BN4
-----Original Message-----
From: Bob Spidell [mailto:bspidell@comcast.net]
Sent: 22 January 2010 15:38
To: Paul Leeks
Cc: healeys@autox.team.net
Subject: Re: [Healeys] Wiring up electronic ignition
You didn't say what type of electronic ignition you have. I'm only familiar
with Pertronix; I'm going to assume what you have is similar.
A points setup switches current to ground, hence "a b/w wire from the
distributor and a b/w wire from the battery/earth (which are joined together)
attached to the +ve terminal of the coil" (the lead to the distributor goes
to ground through the points, the one to the master switch shorts it out so
the car can't start). A Pertronix--if your ignition is different this may
not apply--switches current through the coil, hence "a black wire from the
electronic ignition attached to the wire from the ignition switch and the
wire from the fuses (joined together)" and "a black/white wire from the
electronic ignition attached to the -ve terminal of the coil." Sounds like
you're missing a path to ground, since "the wire from the battery/earth and
the loose original wire from the distributor (no longer attached) attached to
the +ve terminal of the coil."
Try running a lead from the +ve terminal of the coil to ground (any screw
into the chassis should work). On my Pertronix setup I used the b/w wire to
the master switch for a ground, but moved it to the other terminal on the
switch. The way your car is currently wired the b/w wire will be an open
circuit when the master switch is "ON," so it won't provide a ground for the
electronic switching unit (it would provide a path to ground with the master
switch in the "OFF" position, but your starter wouldn't crank).
bs
--------------------------------
Bob Spidell - San Jose, CA
----------------
I have recently had my distributor overhauled and fitted with electronic
ignition (in place of the old points and condenser). However, I am now
getting no spark and so I would like to check that I have my new wiring
correct (it is positive earth) ...
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