Top down rotating tower on a vehicle

Hello guys! I’ve been working on my project for a while and currently facing one trouble. Cannot find answer anywhere.

In my game top down game you control the vehicle by keyboard buttons, and the vehicle also has a rotating tower on a top, and it can rotate and shoot by using mouse.
I made a wheeled vehicle BP for a vehicle without a tower and another character blueprint for a tower. Wheeled vehicle is working fine, and the tower works too - it rotates to mouse cursor, shooting, has camera zoom etc. Basically, they are working fine separately.

And now I have no idea how to combine them to work together. I need the player to be able to control the vehicle via keyboard and the tower to shoot and rotate independently while being on the top of the vehicle by using the mouse.