I had the same challenge with the ribbon cable clamp. There is a tiny orange ribbon, visible in the lower left corner of the photo for step 10, above, that needs to be connected to the new part using a tiny clamp, also visible right there in step 10. To open it, you flip up part of the clamp that is opposite the ribbon. That will release the ribbon, and enable you to slide the ribbon into the new clamp, which then you can adhere to the bracket. Hope that's helpful for future fixers.