On my older car I had rigged a SPDT-NO switch from
IGN to interrupt the electric fuel pump, or connect
the IGN to the horns (so if someone managed to get
the thing hotwired, there would be no fuel and plenty
noise). Center position is just no fuel.

On these cars I'd interrupt the fuel pump relay coil,
not try to put a switch inline with the pump motor
itself - the pump has a fair draw and you don't want
flakey or even just degraded fuel delivery.

 

I asked one of my friends to help me with this as i am not good with this electrical and snipping wires stuff he said that we should just go into the fuse panel there by the steering wheel and do it there is that what you guys mean