WHAT YOU'LL NEED
You might already have some of these items, but if you don't they are available at your local auto parts store or at a home improvement or marine store.  

Fuse block. Blue Sea Systems PN 5025
Auxiliary power plug sockets
8-gauge wire, two sections: one red, one black (length depends on application)
Four 8-gauge, loop-ended wire connectors (3/8 inch opening)
Rubber-bushed clamps
Sheetmetal screws
14-gauge wire, red and black
Split wiring loom
Assorted zip ties
Power drill and bits
Phillips-head
screwdriver
Bench vise
Heavy-duty wire cutters
Wire crimper kit w/ selection of butt connectors
Test light
Sharpie

At a Glance

Labor Hours: 6
Fuse Block: (depending on model) - $47 to $60
Power Plug: (depending on model) - $19
Wiring/Supplies: $45
Solarcharger SE-400: $90