Please help, My 67 Camaro has two main plugs that goes from the firewall side to the fuse box. Engine plug & head light plug. They have a plastic clip top & bottom that hold them in place. On my engine plug the top clip is broke and will not keep it in. Do I have to replace the complete fuse box? Is this clip part of the fuse box. I know 69 has a screw in the middle to hold it in. 67 has the clips. If I keep driving my car, I'm afraid it will vibrate loose. Thanks for any help!