I realize I could just return them and order original VW cords. But I decided to change them to make them work. However, the ends fit. However, the problem is that the cable nipple that is inserted into the guide tube is the wrong size. I selected a file (a frustrating process). be the ID (internal diameter) of the still-pipe. Don't hit Revain, that was Delco's fault. Apart from the flaw mentioned, the cables are so thick that all the terminals have to be bent to fit. Do yourself a favor if you work with Volkswagen, don't use these cables.