Recommended Using in the Engine CompartmentDesigned for use in most Gasoline and Diesel vehicles where the 12-volt or 24-volt battery is located in the engine compartment. **NOTE**: The wires should be connected to the 12-volt or 24-volt battery located in the engine compartment. Please check the location of your vehicle's battery before purchase. | No Suggested for Electric or Hybrid Electric VehiclesNot suggested using in the Electric or Hybrid Electric Vehicles, or vehicles with battery located in the passengers' compartment or in the trunk. The challenge lies in the accessibility of the 12-volt or 24-volt battery, as well as the limitations of the unit's reach. | CAUTION Before PurchaseCertain vehicles' electrical systems may restrict the connection of external devices, such as under hood rodent repellent, which could potentially trigger the vehicle's warning system. If you have concerns, please contact the vehicle manufacturer to inquire about the compatibility of your vehicle's electrical system before purchase. |