Ok, so the stock ignition coil is pretty much shot on my dad's '95 sidekick.  Bought a Blaster 2 coil and am going to install, but I've got a couple of questions...  The stock ignition coil as a little module bolted to the top of it that says IBG CO Power Module J1212, and then there is a little black box, maybe 1/2"x1/4"x1" with two black wires coming off of it that is slipped under the top bolt where the stock coil connects to the frame.  Do I need to somehow retain these modules when I replace the coil?  What the heck are they?