Lost in my 2013 Chrysler 200

okay so here's my issues at this point in time I'm just going to point a few things out and then you can tell me where to go from there what to do so initially all I just change the head gaskets on this thing but I changed them both at the same time so basically the whole motor was taking apart the whole top of the motor so all the electrical and everything else. well I've been putting it back together now for over a month and only reason I say that is because I haven't been able to get it started I'm having electrical issues and I don't know where that came from I changed actually I'm lying I changed the connectors in the beginning because the other ones were just I don't know why they were broken so I changed them out I don't know if I got wires crossed or not that's one thing I'm looking for diagrams for the the big three connectors green black and gray and then and then okay so so 4 days ago I had it running started everything everything was working great and then bam it just quit doing anything I had I got I had a bad something somewhere bad ground or something I don't know but now I've got no crank no start and when I put my key in the ignition everything works but when I put my key in the ignition and turn it I get nothing workings when I turn the key onto your my overhead light flickers and goes out and that's where I'm at right now and I'm beating my head against the wall trying to figure this out...
any questions answer any questions answers would be greatly appreciated I'm sure I missed a lot it's a 2013 Chrysler 200 3.6 limited every option you can want all the bells and whistles