You might be interested in joining Earlycj5.com
. You have an intermediate jeep, as do I. 1972-1975 share alot of parts. Here, I hope this helps, but I posted this from the Early CJ5 forum, as I am a member there. Good help on the forums for 1975 and earlier. I hope this gives you some help, my 72 has a 304 with old school points...
The module, the reluctor pickup, and the plug that connects them are troublesome with this setup. In 1978, Jeep dropped the Prestolite ignition and went to the Autolite Duraspark ignition. The Duraspark parts are easy to find (any 78-on Wagoneer with a V8, which is almost all of them) and if you're handy with electricity, you can swap the entire setup.
The reluctor coil is a black plastic part inside the distributor that passes between the toothed wheel as it turns. Sometimes these aren't grounded well (see above) or the connector from the reluctor coil to the module gets corroded. Jeep had a service bulletin in 1975 that warned about corrosion, and supplied some dielectric grease to coat the connectors with. A meor certain fix is to cut out the connector and solder the leads thogether. This makes changing modules in the field a little more difficult, however.
You can also buy a reman distributor for a '73 Jeep and go (backwards) to points ignition. Many people find that system easier to troubleshoot, though the modern electronic systems are as reliable and more maintenance free.
Do you know that your coil is ok? Likely the easiest way to test it is to try it in another car... either that, or buy a new one and if that's not the problem, you'll have a spare.