It is also possible that there is a short or fault in the distributor. Possibly the coil is being powered when the ignition is on the engine is stalled. The distributor powers the coil by pulling the coil (-) terminal to ground. It might be worth checking the lead out of the distributor to ground (distributor body). Place on low ohm setting and measure with leads both ways. If the reading is an ohm or less the electronic distributor is at fault. Using the multi-meter diode setting, may reveal open with leads one way and about 0.5V in the other, this is perhaps a good reading.
