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Now I want to replace the systems and I am not sure how everything goes together. Does anyone know if the old M-17 had an electric pump that provided water to the sink?<<

Hi Bob.. My 1079 M-17 has a Whale pump at the sink and a 6 gallon water tank under the cockpit floor. The pump is available at West Marine..and probably BoatUS as well. Harvey/Ga M-17 Stargazer #294