I have a 2013 Chrysler 200 touring 2.4 L engine car idles rough stalls jerks act like it wants to die my speedometer jumps from 0 all the way back up my lights flicker I have changed my alternator I have changed my battery I have changed so much stuff on this car I don't know what to do first it start out with just a rough idle but it's just got a whole lot worse and my check engine lights on

 

I have also changed spark plugs coil packs injectors and a while be fuel pump assembly

 

Suggest posting on '200forums.com'. A very knowledgeable contributor there has access to the service manuals and wiring diagrams for the 200 and factory diagnostic procedures.