Sounds like your Ignition Control Module isn't getting power.
IIRC, on the 2 wire connector to the ICM (under the washer bottle) the red wire is your 12V input in the run position of your ignition switch. The other wire is hot in the start position.
This is what powers up your module and provides power to the coil.
Do a google for "88 jeep ignition and starter wiring", there are schematics available free. You have to have the wiring diagrams to properly troubleshoot this, else you will be replacing parts that aren't bad, and may never find the problem if it is a bad connector or broken wire.
A multimeter helps, but you can do about all of this with just a test light.
418 miles on 19 gallons of gas. Can't beat the BBD !