[villagetinker]

There are several options, on a newer car especially one with LED lights, check that whatever you are planning to use is compatible with your vehicles wiring. The alarm typically connect to the power wire going to WHITE backup lights, so when you put the vehicle in reverse the alarm sounds. My old Dodge Magnum was specifically listed as having a "sensitive" lighting system and had to have isolation relays for anything connecting to the existing lights. I would use a local automotive store and tell them exactly what vehicle to are doing this on to make sure the device is compatible.