This is an exact match made to the same specifications as the original, to ensure fast and easy installation with beautiful results. Brand new high quality part. No modifications necessary. Adapts 1958-1975 harness to use a 1976-1982-type power window motor. If you have any questions, the knowledgeable parts specialists at Keen Parts will be happy to help you with your project. This is a high-quality reproduction of the Power Window Motor Adapter Harness that appeared on 1958-1975 C1 C2 C3 Corvettes. It adapts the 1958-1975 harness to use a 1976-1982-type power window motor.