I recently bought a Maxterra rear bumper. I forgot that it comes with a hole for the trailer wiring to mount to. I do not intend to tow, but want to plug the hole. Where can I find the factory cover? I have been looking, but am not familiar with the terms to search for. My goal is to hack off the back of the plug assembly so I can mount a bottle opener behind it. I think it will be a cool little hidden opener, but just need to find the right flip cover.