5-90, Got your email back channel but since ssnsltd has the same questions I'll reply here. I used the Accel Super coil as mentioned in my previous post. However, any after market coil will work. Your total gain and performance increase will vary depending on the variables like plugs, wires etc. Basically ignore all the manufactures wiring or recommendations.
Your stock coil is mounted directly to the Ignition Control Module (ICM). However, you can seperate them. Un-plug the weather connectors on the ICM and remove it and the coil assembly from the truck so you can see better if you need to. There are two (thinks it's only two) screws that hold the coil to the ICM. Remove these screws and the Coil and ICM will seperate. The stock coil has two round prongs that seat into two u-shaped connectors for the electrical connections.
This is how I hooked up my coil. The stock Coil will be marked with a + and - by the prongs so you will be able to know which is plus and minus on the ICM. If you inspect the u-shapped connectors on the ICM where the coil seats, you will notice that each side of the u is very similar to a male blade style connector. I simply took about 6" of wire in red and black colors and crimped on female blade connectors. I did a test fit by sliding one of the females over one side of the u-connectors. I made a minor adjustment to with a pair of pliers and closed the gap in the female connector for a snugger fit. I packed each female connector with electrical grease and hooked the positive side of the ICM to the postive pole on the coil and did the same for the negative side. The Accel coil is a bit bigger than stock so I could only get one screw from the coil to the ICM. However, I secured everything using metal strapping held in place by the bolts used to hold the ICM to the fender. This has worked well and it has been in place for over 4 years now.
Performance..... It may be different for everyone. For me... this is what I saw. Adding the Accel coil made the jeep feel like I just cleaned the fuel injectors, put in new wires and plugs and run high octane, all in all not a huge difference but there was a difference. In fact, I didn't realize just how much difference there was till I was trouble-shooting a problem and put a new stock coil back into the ICM. If felt like a had lost performance, kinda like fould plugs or fould injectors. When I realized my problem was not coil related I put the Accel back in. I now run the Accel coil, Accel Universal Super Stock 8 mm wires, and a cap and roter with Brass terminals...... You're experince may be difference, but for me, it works, just don't expect rocket power. If all of this did not make sense or you have questions, feel free to call me. 303-714-7174.Troy