Focus Kill Switch??
 

My Focus doesn't have a fuse for the injectors like many people use to make a kill switch. From what I can tell by looking at the wires on the car, the injectors DO NOT share 1 common wire. They seem to be wired in pairs, of sorts, so a single interrupter is out of the question too, I guess.

Has anyone made a kill switch on a newer car that doesn't have a dedicated injector fuse? I'm really stumped with possible options here and am looking for others' experience on how to do it or where to look in the harness for options. I want to start doing more EOC but I don't want to wear out my ignition switch...

Also don't want to keep using the switch because when I roll the key back the dome light comes on, the head lights turn off and probably a couple more things I don't notice happen too. For obvious reasons Id like to not lose my vision while driving and the combo of dome on, headlights off, really makes a difference during night driving.

Try cutting the signal from the crankshaft position sensor.

works like a charm on my 2013 Subaru Sti

Good thinking, Jedi. I'll have to look into that and see where it would all connect in.