I have a brand new, in-the-box, Pop and Lock tailgate security mechanism that works with your Ridgeline's electronic locking system. There is no key or handle change required. It is Model PL8600, and it's specified for all 2005-2020. It is all internal to the tailgate, and works in conjunction with your truck's existing locks. You can research the part number. PM if interested. I'm looking for $75 plus shipping (from eastern PA). I bought one for my 2017 RL, while at the same time I got the same part as a gift. A little tricky to install, but doable. And it works.