Got a 2019 Fuel 352 and it has 2 black and 2 grey tanks. The handles are separated for front and rear bathrooms but the actual valve remote handles are not marked. With the underneath closed off, I can't tell which handle is which. I prefer to dump the black and then the grey to help wash down the drain hoses. Does anyone know which handle is what?
2019 Heartland Fuel 352
VIN #5SFCG3924KE395172
John & Cena
2019 Heartland Fuel 352
VIN #5SFCG3924KE395172
John & Cena