So I am about to install my NX kit into the Z and having learned from the past I decided to build a box that allows me to have all the major wiring, fusing and such on one location. Note there is only 1 splice point into the electrical system and that can be done by using a "Add a Circuit" Fuse. Also note since my maximizer won't arrive till monday I had to guess the connections based on how the tps/window switch worked in the past.
I hope this is helpful for those of you about to install a kit as well.

 

Yeah......looks complicated enough on paper....now wait till you actually get to DOING all that wiring. I have just a few more connections left to make to the tank and just to plug the main nozzle into the intake and I should be good to go. So far, looks like all the electronics are working and wired correctly.

 

This way will be much less wiring than last time, believe I know the nightmare
FYI: The fuse box is prewired from Painless
Routing the wires to their locations that's the part I hate

 

Now that the maximizer arrived I updated the diagram accordingly
this is pretty much it.

One challenge is that the system gets armed via a ground circuit and I will have to figure out how to do that without having to get a different arm switch. The manual states I need to hookup a ground relay...not quite sure how to do that.