I recently installed the X-5 Wheel pilot on my boat. After powering up, the first test is (at dockside) to hit the + & - buttons to confirm the wheel is turned correctly (+ for stbd), before heading out to sea trial.
Mine was opposite...had to switch the motor leads. Sea trial then went flawlessly.
When you first tested the controls, did you note the direction in which the wheel turned when hitting the + & -? If that was correct, something else is wacky.
It's not whether you're paranoid...it's whether you're paranoid enough.
1988 Sabre 30