Ok,
Here's a trick. Go to a good handbrake cable shop. They will be able to unclamp the connectors and then re-clamp them on your Beetle cables.
But make your measures right! They can only do it once more as the connectors won't be as strong after repeated unclamping and re-clamping....
Good luck! And do take down some number and share with us here.
By the way, how did you locate just the end connectors? Everyone seems to want to sell me a whole cable!!! Grr..
Got any more lying around?
Sprint.