I'm hoping someone with factory installed Oxygenators can tell me how they are wired to turn on? I have a 2020 CX20 and noticed the Oxygenators did not come on when filled with water. I pressed the first accessory button and it turned on the starboard Oxygenator, but not the port side. The second and third accessory appeared to do nothing. Should they both come on with the first button or are they turned on separately?