The Trumatic E1800 Heater Control Panel and Thermostat Control Unit are used components for heating and cooling systems in vehicles. Specifically designed by the brand Trumatic, these parts are essential for controlling the temperature and climate settings in your car. The manufacturer part number 126974 ensures compatibility and quality for your HVAC control system. Whether you are looking to repair or upgrade your current heating and cooling controls, these units are reliable choices for your vehicle's climate control system.