"Mike" wrote in message
...
Doing a tune-up on a 95 OMC Cobra with Delco EST breakerless ignition.
Manual says to use OMC adapter plug P/N 986662 to shunt the electronic
spark
advance when setting timing. Anyone know how to make one or is there a
work
around for this?


If you have the wiring diagram, all you have to do is use a jumper wire from
the module pin to a source of B+. That will "freeze" the variable timing
mode and allow you to set the base timing. Perhaps you might try to find a
connector at a GM dealership

Bill Grannis
service manager