Under most circumstances, the ignition interlock can be installed on any vehicle that operates with a 12-volt electrical system. However, since the ignition interlock monitors a number of vehicle functions, especially the alternator and charging system, the electrical system must meet certain minimal standards. At your installation appointment, the Monitech technician will first determine if your vehicle has service difficulties. If the vehicle does not meet minimal standards, the difficulties will be pointed out to you and a second appointment date will be established at no extra charge.