I have an NGK LZFH (non resistor) spark plug cap I'm trying to attach to my Emgo coil wire, but can't find info on how to attach it. There is what appears to be a self tapping screw in the plug cap, do I just jam the coil wire into it and screw it in, or do I need to get a special connector and trim the coil wire? I searched this forum and outside, but didn't get any hits. Maybe it's too elemental of a question, but I don't want to ruin it by guessing. TIA

Usually a good idea to trim a tiny bit off the coil wire if it's an old used one...  not if new. 

Otherwise, yes, stick the wire in and thread cap on....  "righty-tighty".  Usually easy to tell when it snugs up but don't overtighten. 

Some people measure the depth of the hole in the plug cap and mark the wire so they know when they've bottomed out...  you have to slide wire boot on and down wire first if you do it that way.  (I don't)

Sometimes I just use a wood screw or similar first screwed into the wire to make it easier to thread in the cap with its blunt nosed threaded bit.