Low amp kill switch on LS3: Crank / Cam Position sensor

[ModernMuseum]

Has anyone installed a kill switch using a cam or crank position sensor? In theory, this would allow the car to spin over but not start. I have some 6 amp switches I can hide pretty easily and don't really want to run a relay (in the case I might use the ECM ignition/power).



Thoughts?

[Hotwire]

As finicky as these sensors are you might run in to noise related issues with a switch inline? It's a good idea for disabling the car, if you can get the switch in with the wire run and don't add extra length, I'd say give it a shot.

[BonzoHansen]

I'd be leary of adding resistance to a sensor circuit. But I could be wrong.

[btmatt]

Gen IV crank and cam sensors typically have pull up resistors in the circuit to help with noise issues. That said, I agree that I would not monkey with that too much

I think it might be more simple to add a disable switch to the fuel pump trigger and accomplish the same

[ModernMuseum]

Sounds good, I"ll look into plumbing it into the fuel pump side.

[TrendSetter]

if you switch the crank or cam sensor, id switch the power wire to the sensor, not the signal wire

[Hotwire]

if you switch the crank or cam sensor, id switch the power wire to the sensor, not the signal wire

That's the answer, great thinking!

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Keep in mind you will get a DTC doing this when the switch is off and you're trying to crank.