Have you determined the cause of the no output situation? Lots of simple things can make the output go away.
That said the Phasor Compact 6 Kw is a nice unit.
Attwood makes a small D cell powered bilge pump. Self contained with an on-off switch. It gets down low to the deck about 1/4 inch. I use one for my skiff. The hose coils up around the pump body for storage.
A 40 nm ring will only be visible if you are zoomed out far enough to see it, no? Who keeps their chart plotter zoomed out that far? Not me unless making a big change to areas.
If you havent bought them yet, great because you want the 2" spindle foot mount for a Perkins 6.354. Those in the photos are either 3.15" or 4" saddle foot mounts. They are not even close. So unless you want to build custom mounts, go 2" Dual foot mount and a few spacer washers to make it line...