the ignition is just a swap out piece. If you have tip start (from the pictures you do) the push to start ignition plugs into the same plug that goes into your current ignition. From the pictures your missing the silver surround around the ignition. just a cosmetic thing.This is how I got my car with the ignition looking like this which makes me believe something else was there.. & also saw these to connectors have no clue what they are.. lmk if my theory on the ignition seems crazy @madpuma13
The harness that you need for the N GO part of push button is to connect all the antennas that are needed for the push to start key.
I am not sure what those plugs are for. Definitely not the same plug thats needed for the antennas though.