Upgrade your classic 1963 Buick Fullsize or Riviera with the premium Rear Window Defogger Harness from Lectric Limited. Designed specifically for your vehicle, this harness ensures optimal performance of your rear defogger system. Say goodbye to foggy windows and hello to enhanced visibility, making every drive safer and more enjoyable. Unlike generic options, our precision-engineered harness guarantees a perfect fit and long-lasting reliability.