If you have a failure of the electrical part of the ignition switch .... it
can be such that the engine will crank but receive no spark.  It would seem
easy to just put a switch in the appropriate wire exiting the ignition
switch.

Mike

> You would have a much easier time of "shutting off" the coil if you placed
your permanent kill switch in the 12V lead that supplies power to the coil,
rather than the high voltage lead to the distributor. Most of the reason
that the high-tension lead to the distributor is the one that usually gets
pulled is that it is easy to do, for a temporary fix. If you want to go
permanent, stay away from the high-tension lead! The problems with switching
off the coil may be more trouble than they are worth, though, because of
some of the other devices that receive their power from the coil. Look at
the bundle of wires attached to the "+" side of your coil sometime! It can
still work, if you put the group connection away from the coil, and run a
single lead to the switch, then to the coil.  Slightly more complicated, but
easily doable. Again, it comes down to how much trouble you want to go to.
>
>
>
> Evan Mac Donald
>
> 1984 Wolfburg
> 1985 GL 7 Pass.
> 1991 Carat Weekender