Minitimer W-BUS evo.
I installed a mini-timer for a Webasto system in my car. It's a very good replacement for the standard "egg." The "egg" is unreasonably expensive for some reason. And it doesn't have that many functions.
Connects to positive, negative, and wireless.
For a Land Rover Discovery 3, the optimal mode is TTV.
Where I bought it: https://www.avito.ru/user/3e678bfbeea...
I'm on Drive2: https://www.drive2.ru/users/vikvnedorog/