ALL 1963 Corvette headlight buckets were originally made of fiberglass. So, our headlight bucket extension harnesses, designed for use with fiberglass headlight buckets (part # 662042), is correct. However, if a fiberglass headlight bucket got damaged and needed replacing, the only available option was a replacement headlight bucket made of metal. And through the years, many of the original 1963 Corvette fiberglass headlight buckets were replaced with the metal ones. Consequently, the wiring had to be changed. We offer a 662041 Headlight Bucket Extension Harness for those 1963 Corvettes that have the newer, metal buckets. If you are not sure if you have a fiberglass or metal headlight bucket, put a magnet to it!
Electrical components such as a harness are non returnable parts.
Always refer to a factory service manual when diagnosing engine service problems. You can damage electrical components if the proper procedures are not followed. Be sure you are replacing the correct part.