A Kill switch does nothing but make it easier to Steal the car unless done very stealthy.
Reasoning why.. You have to cut the starter wire and then run 12volts into the relay from some where or Ground. soo they rip your dash off grab the relay and pull out the connectors, Strip the Constant power wire and cut the ignition wire. wrap the ignition wire around the power wire and touch the Stater wire to the constant. Bam! i now have your car. Soo if they don't have to search for the starter wire which some times is the hardest to find. Makes it super simple.
