I'm not tryin to be a dick, but I can't figure out half of what you typed!!! So I honestly have no idea what you're actual issue is besides it won't start....
Did this problem start before or after you replaced the ignition switch? Or did you replace the switch because it wouldn't start?
When did this occur? , do you drive it often? Has it been sitting?
Have you checked fuel pressure? I think you said you had spark?
Does you hear a click or crank or nothing?
Have you tried starting it in neutral if automatic?

 

Okay sorry.
story time…

started jeep. sparks happened from ignition switch area….jeep dies…won't start again…replaced the iginition switch…after shooting it down with a meter…the starter has 12 v and the battery is good. when i tried cranking it while having the meter on the starter solenoid to ignition switch wire got zero! so is it a fusible link wire from the starter solenoid to the ignition switch ? no hurt feelings…just frustrated and not thinking straight anymore …wiring sucks...

 

What year? Sub model?
Ill look up wiring diagram tomorrow for you

 

1995 jeep cherokee 4.0 6l . i can get the starter to spin up only when i do the screw driver trick on the starter and solenoid. so the starter is getting power. been looking at diagrams non stop. not very good with wiring diagrams learning . the problem I' think I've trouble shot down to is the wire going from the starter solenoid . the constant is getting power from battery but the one going to the ignition switch is not when we turn the key and check it/crank. could it be a neutral safety switch? already changed the ignition switch.

 

Try starting in neutral.
Otherwise I don't know without diagram

 

Got my light bar back last night ...yep the one that got stolen months ago I mean MONTHS ago ...lol some lil Chevy punk stole it ....just recently met this other dude ...when I showed him the jeep he told me so I got my 40" back and instead of the 2 pods he gave me a high lift

 

Glad you were able to recover it. Been looking for a 40 inch.

 

I'll give you $50

 

$55

 

Put the 285s on the wife's jeep

Looks Sooooooooo much better!!!

 

$56

 

gonna be my new back up light

 

Or 40" rock light

 

nice

 

Sat after 3pm but with enough time to do the work!!!