Jay, the genset thru-hull and strainer is located under the middle aft cabin cushion in the rear of the two storage areas. In that rear area you will also find the thru-hull and sea strainer for the A/C as well as the A/C wate pump. Loacate in there to is the sump for the shower which is also the catch basin for the A/C condensate.
You may have damaged the impeller, it's a bear to change. I would clear the sea strainer fort eh genset and start it up and see if it pumps water.
If you need to change the impeller, I'mll post the directions in another thread.
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Jvalich
http://www.badcock.com'04 FW 288 Vista "Mental Floss"