And again I will say this,an instant on alarm,no warning lights,no stickers, leave the doors unlocked. They think they found an easy mark,they open the door, now there's a honking horn,flashing lights and a siren,before they can damage your truck.. Even if they hook up a tow truck,with a mercury switch, they are towing a car down the road,flashing lights, honking horn siren going off,attracting attention to witnesses or police. People are a lot more likely to remember and maybe report a tow truck or even just a truck going down the road with an alarm blaring and lights flashing. Counting on a hidden starter switch,they break your window,smash your column,try to start it,the dash lights come on but no starter,so they short the starter with a quarter,a screwdriver,whatever,all you did is delay them 20 seconds. And even if they didn't get the truck you still have hundreds of dollars of repairs to make,and you've done nothing to deter a tow truck.