The Primatech 12V 5-Terminal A/C Resistor is the perfect solution for reducing power consumption in your HVAC system. This resistor helps maintain a comfortable temperature inside the truck cabin while reducing the amount of energy used. This resistor is easy to install and provides reliable performance. It is the perfect choice for any truck driver looking to reduce their energy costs and keep their cabin comfortable. FleetPride is your First Click in Heavy Duty®.