The Voltage Spike Clipper. Everytime you make or break a circuit in a motor vehicle, you risk generating voltage spikes at anywhere from tens to thousands of volts. A relatively simple act such as jump starting a car, changing a fuse or disconnecting the battery for charging, is enough to generate potentially crippling spikes. When the ANTIZAP is connected to the car`s battery, it becomes part of the vehicle`s electrical circuit. As voltage spikes pass through the ANTIZAP unit they are immediately clipped to a level that`s safe for the vehicle`s electronics, preventing any possible damage. ANTIZAP protects your: Fuel gauges, ABS brakes, radios, tape and CD players, car alarms, SRS air bags, all LED instrumentation, EFI fuel systems, and climate control systems. Protects against all welding, i.e., ARC, Mig and TIG.