there is a hole on the right side muffler bracket. when i said right side bracket i mean the one that holds the screws for the right side of the factory lower cowling. specific and unique to the 12 muffler. the "blind hole" clip plugs into that hole. its purpose it to hold the cable in its proper place as designed. it's a small plastic clip that can be found at any decent auto parts store. be sure the one you buy has fingers sized correctly to plug into the hole and that it's ID is just a tad larger than the muffler cable.