well we are getting there slowly .
Fuse holder west marine has a small one wm part number 48 7801
mount this in a place where you can to it
in line fuse holder for the battery
radio shack in - line " blade " fuse holder part number 270-1234
get a 30 amp fuse.
crimp a yellow ring conector to the radio shack in line this will be connected to the battery + terminal. Useing yellow butt conector and use 10 gauge black wire crimp connect to black wire in wire harness that you cut off out side the trailer. that is is the wire is 10 or 12 gauge .
on the inside crimp new 10 gage wire and run to fuse block from west mairne
one 5 amp fuse for both of your dc lights
run a red 18 gauge wire to each of your lights from the fuse block
run a white 18 gauge wire from one light to the next light , from that
next light run white 18 gauge wire to the white wire where it comes in to the trailer. use a quick connect clamp type connection and connect to the white wire. make sure the white wire you are connecting to is not the 110 volt white wire.
on the out side of the trailer slice in to the white wire with a piece 10 gage white wire put a ring connector on it hook it to the negative side of the battery you now have lights.
get a plastic battery box with lid this help contain acid spills when checking water levels ect