I wired a kill switch into my car using the crank sensors wire that runs into the ECU.
It does throw a *check engine light* on the VW but it will not on all cars (check on a Fiat Bravo forum for the preferred method)
2 wires run from the sensor under the hood to the ecu ,your wiring diagram will give you the color code to find the wires in the loom , expose the loom sheathing just ahead of the ECU itself to search for and splice into and solder in some wire and a on/off switch, mounted somewhere in a inconspicuous yet convenient place to use.
But
You could also wire in a fuel injector kill switch , which would shut the motor down as well.
Or wire into the ignition , which may work the best way to avoid a check engine light.
With the crank sensor kill switch I did to my car it causes a check engine light Plus I need to cycle the ignition one turn back then forward( a issue caused by VW's security ignition system)
If I was to do it again I would use a ignition kills switch in hopes the *VW* would not need its key cycled to start again on the next jump start.
I suggest you check the Fiat Bravo forums for the best method.
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Different cars react differently to kill switching. My old honda del sol, i kill switched the ignition ground.
However, on the Sti...the ignition ground also merges with other sensors and components, therefore, killing the ignition made my dash board light up like a christmas tree. After some experimentation, i resorted to the crankshaft position sensor kill switch.
You'll just have to experiment! But i'll take a look at your service manual to see if i can find any possible solutions.
it looks like you have a training manual...its kind of vague.
from all i can tell, you may want to put a kill switch on #11 ignition wires or #13 fuel injectors or #6 fuel pump. however, i strongly suggest AGAINST from tapping into any wires that go into the ECU.
Fuel pump #6 will not yield the best results because it still takes 3-5 seconds before it completely shuts off, therefore, it spits unused fuel into the combustion chamber.
However, if you're able to find the SERVICE MANUAL...it would be a lot more helpful in looking for alternatives on where to install your kill switch.
Can you post up the entire service manual on your google drive? I need to see the descriptions of each of the wiring circuits....similar to the diagrams I put in my thread.
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