Upgrade your classic ride with the 1959 Buick Full Size/Riviera Heater Harness, meticulously crafted to ensure optimal performance of your vehicle's heating system. This essential wiring solution connects the coolant temperature switch, vacuum valve solenoid, and air temperature switch, guaranteeing a functional and reliable automatic heater. Don’t settle for subpar alternatives—experience the peace of mind that comes with a precisely engineered wiring harness designed to enhance your classic Buick’s heating performance.