Welcome to the forum!
Unless you have 2 bathrooms you should only have 1 black tank. The panels are universal to cover all models. If you do have 2 bathrooms, let us know what model and someone with that model may be able to help.
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Zack and Donna plus Millie and Ranger
2018 3160RL
"Life is too short to stay indoors, enjoy the ride!"
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