I only remember one color. Black valve changes "City Water" to "Fresh Water Tank". My curiosity has peaked, so now I have to write the rest down, just to know! (Might be glad i did sometime). But for now, I just follow the color chart.
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John & Pam Moore
Fairview, Oregon
2017 Jayco 321RSTS
2015 Chevrolet Silverado 3500HD
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