Mark, I have a 2012 cruiser 330ss it has switches for 2 blk and 2 grey tks. it does have 2 grey tks but only 1 blk. i suspect that might be for rv's that have 1 and a 1/2 baths . since yours dont it would be a dead switch like mine. my blk tank is 40 gal.
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SFC (U.S.A. RET.)Billy W. and Molly Stark
Once upon a time L.E.O.
dragging a 2012 Crossroads Cruiser 330SS
with a 2012 KR F-350CC, LWB, PSD, FX4 (whew)!!!!!
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