Upgrade your classic Buick's rear window defogger system with the Lectric Limited Rear Window Defogger Extension Harness. Designed specifically for 1966-1967 Buick Fullsize and Riviera models, this premium wire harness offers a reliable connection to your defogger blower motor. Engineered for durability and ease of installation, it ensures optimal performance, setting it apart from alternative harnesses on the market.