I know I can't answer for all Buy Here, Pay Here places and I'm in a different state so not sure if that affects the information I do have. I know a few different BH PH dealers. They don't tell people they are on their car. They are hidden, sometimes very well, sometimes not. If you don't know what you're looking for, you would never even know it's there. Some place them under the hood of the car by the battery, some are placed under the car. Different BH PH places in my area have different places they hide them & depending on the place, they may not always put them in the same place if that makes sense? Place A may always hide them by the battery like I mentioned above. Place B might place one under the hood on one car & underneath on the next. While disconnecting may be no problem, unless you know WHERE it's hidden, it may take some time to find it. My guess would be the person who disconnected the LoJack knew something about the dealership or the car to know where to look to disable it. None of the places I know of ever had it installed inside the car. They were all on the outside. If the car comes in & it's a quick turnaround, the LoJack stays in the same place. If it sat on the lot for a bit, the LoJack is removed & placed on a different car & before it's sold again, another one is installed.