My 60 F100 is all that I have right now and I drive it everywhere. Tonight, I rode with someone to go meet up with others and left my truck at my shop. The shop is in a decent area, and I was only going to be gone for a few hours so I didn't think much of it. I was almost back to the shop when I get a call from the guy that runs a shop down the street that he had just caught people in my truck but they had gotten away. Well to make a long story short, I have multiple visible toggles, some that are important and some that just make indicator lights work tha indicate nothing, while the kill switches are hidden. When I got to my truck, the dash was trashed from whatever they used to pry the ignition cylinder out. The wires to make it start were connected, and the bright red indicator light was on. I guess with the red light on they thought there was power, however that and the radio memory wire are tied together so that when i flip the battery kill switch they stay on. I was able to just put in a used key switch from the shop and drive home, but could have lost my truck. LESSON... If you do not have one install a kill switch. If you do have one, put in another as a back up.