Not sure if this video has been shared here before but this guy did an excellent job detailing how to install rear remotes on an L class machine. I'm not affiliated in any way with this video but I found it extremely valuable for learning how to install my remotes.
Enjoy!
Jared's Shop - Adding Rear Remotes To Kubota L3560
Enjoy!
Jared's Shop - Adding Rear Remotes To Kubota L3560