Installing on boat

Hello! I have a question. :geek:
I want to install GPS-navigation on the boat.
I need to connect one engine, one servo to rotate, and another to open the lock hopper.
The engine and turn works! How to connect the servo to open the lock hopper? :angry:
If you can, show the proper connection scheme :unamused:

Define lock hopper and how it is controlled.

Here is lock. Its a usual servo. It should work when the right stick down.

Its not very clear what you want from your description but if its just an open and close mechanism couldn’t you just connect it to a switch and a separate RC channel and drive it that way? Flick switch - it opens?

Thanks, Grant.