need ideas for a Fuel pump Kill Switch.

hello to all!

it's been a while!..

i recently bought a blazer s10 2001 , 2door Zr2 4.3

the last thing i put in the truck, was the Car Alarm..(Alarm + Ignition Cut Off system) the normal stuff...

but i want to install some other security thing. like a kill Switch. to the Fuel pump.

i know how to install a switch. but. since this truck is new to me, i dont know what cable to cut to make the Switch.
some other say that from the relay. but it's there another cable.. some other thing to cut off ???

if someone already do this... please. help me...

thank you!!!

How about a Smart phone app to disable the electric fuel pump.
12volts > Switch > Relay > Fuse
See www.alldata.com (http://www.alldata.com) , attach signal to encrypted key circuit.

At the PCM: Connector #4, pin #1, dark green with a white trace wire. That is the fuel pump relay trigger. Put a switch in that wire, it's very low current so you don't even need a relay.

You could also interupt the pink wire at the crankshaft position sensor.

Either way, the vehicle will not start.

you could aslo run wire to the coil wire and into the drives area with a kill swith there thats how i did mine

you could aslo run wire to the coil wire and into the drives area with a kill swith there thats how i did mine

Although this will prevent the engine from starting, the injectors will still squirt fuel while cranking and flood the engine. The OEM Passlock system, which this vehicle already has, shuts off the injectors in a theft situation. Not sure what the aftermarket security system disables. Interupting the pink wire to the crankshaft position sensor will disable the ignition and the fuel injectors. Seems like overkill to me, not to mention too many things to fail when you want it to start ;)