anti-theft kill switch(lost the little plug)

just completely take it out unless you really want it in there. Car theifs have found out about them and even if you pull the tab out they can pull that whole box out and still start the truck. SOmeone played a trick on me one time and pulled the tab out and i made them look like a dumb @ss by just unplugging the box and i started it and drop off it was quite funny.
 
Top