Ignition switch
Bare bones, only lights and wipers to make street legal.
Mopar electronic ignition.Not much to power up.
The problem with using a toggle/ PB and using this type of ignition, is that you should come up with an alternative method for ballast resistor bypass during start.
There are a few ways to do this
One is to use the later "Jeep" style starter relay, which has an additional contact:
http://oljeep.com/gw/elec/StarterRelay.jpg
another is to add a generic (Bosch) Relay that's fired in parallel with the starter relay, and use it to feed the ignition bypass
yet another is to install a diode from the start wire on the starter relay to the hot side of the coil.
If you have an auto trans, you MUST retain the factory starter relay in order to keep a functioning neutral safety switch.
Frankly, I would like to attempt to discourage you in this. It might seem simple, but much of the problems in these old girls is that they are under fused along with the bulkhead connector problems.
The ignition switches are a minor part and are not really a serious problem.
Removing same removes ALL theft protection you might have.