Loren, I was just typing up a similar response when I saw yours come through....
With these boats getting a little long in the tooth, they are accumulating a lot of holes for various system installs. I've started placing equipment on removeable backboards so I can replace the backboard when it comes time to replace the piece of equipment. An added bonus of this approach is being able to take the backboard home where you can play with the configuration without worrying about drilling unnecessary holes in the boat's cabinetry. Not all spots on the boat are conducive to this method, but your project may be a good candidate. Here's one for the electrical panel

and another for the bilge pumps (before paint)
