NoPe!!!!!!!!!!!!fierospeeder said:you can try pulling a fuse.
You need to look at a wiring diagram to see what wires are being used. Such as the speedometer might be using the same power circuit as the ignition system. If you distrupt the circuit, it will kill the power to the ignition.
Another thing you can try, is getting an aftermarket ignition system, and that might allow you to do what your looking for.