Upgrade your classic Buick with our premium Courtesy Light Harness, specifically designed for 1965 and 1966 Buick Fullsize/Riviera models including the Electra 225 4 Door Hardtop. This reliable wire harness ensures smooth operation of your dual rear sail panel lights, enhancing both the functionality and aesthetic of your vehicle. Unlike generic options, our harness is precision-engineered for a perfect fit, ensuring that you can restore your vintage ride without the worry of compatibility issues.