Topic: Kill switch wiring, do I need to wire separate ignition cutoff?
I did search the forums for an answer to this question and I did not find anything. My apologies if I've missed it.
I bought the kill switch from the Lemons store, this one: http://store.24hoursoflemons.com/produc … switch.htm
The wiring diagram image is below for reference. This diagram and the many threads on the forum make it very clear and easy to understand how to wire this up correctly.
On a modern ECU driven electronic fuel injection, coil on plug car, is it necessary to wire in the ignition switch/coil cutoff? On a modern ECU driven electronic fuel injection car, I believe that cutting off the battery and grounding out the alternator current (the "W or 1" connection) will very rapidly cut off power to the fuel pump, ECU, injectors, coils, etc.
For a non-ECU carbureted car with a mechanical fuel pump, I can see the extra value of adding the ignition coil cutoff, but I don't think that wiring up the ignition/coil cutoff adds any extra protection for a modern car.
So, my questions are:
1. Will my car pass tech if I don't wire in the ignition switch cutoff depicted in the diagram below (the "Z or 2" connection)?
2. Separate from the question of passing tech, on a modern ECU driven electronic fuel injection car, does wiring in the ignition switch cutoff provide any extra protection?