anchor washdown
DaveI installed an anchor washdown in our 420. Your setup would be quite similar to mine. I installed a separate thruhull in the forward locker where the other ones are located. Installed a raw water strainer and graco pump with pressure switch in the same locker, then ran the hose under the pan of the forward head and up between the bulkheads of the head and anchor well ending with a flush surface mounted quick hose disconnect in the anchor well. Power to the pump was taken off of the windless circuit with a fuse and switch located in the head.If you want any particular, email me at eternity420@comcast.net