Because this Toyota Solara alarm system is OEM you know it will operate correctly and also the installation will be a straight forward process with all connectors matching up so here will be no confusion. You can be assured of a perfect fit when purchasing this factory Toyota Solara security system for your vehicle so you won't have any unwanted rattles or extra wires hanging down from under the dash. This Toyota Solara security alarm includes all hardware and necessary components for ease of installation in your vehicle which is just one of the reasons to get the factory system. This factory Toyota Solara security system is vehicle specific for maximum protection and fitment so it will eliminate guess work and operate as designed once it is installed in your vehicle.