left, right, on/off, momentary/ continues buttons all look like this. With that all i need in a joystick is just a digital switch like this
So basically run the two wires from each button to a switch the switch completes the circuit on the board and the motor moves.
Now for the speed portion i purchased the same pot that is on the BT circuit board and wired it the same way to this board
tested all functions with ohm meter and my Father in laws bench power source and all is functioning correctly now just need to connect to troller and see if it works