I want a better charge rate going to my trailer battery, meaning the 10ga wire from the 7 way plug is not cutting it. I have jumper cable style anderson plugs on the front and rear of the truck and I was going to make a harness out of 6ga wire from west marine. Question is what would be the best way for the wire to enter the nose box and still keeping it more or less water tight? I looked inside the trailer's control box no room for a 6ga wire. Not really wanting to drill a hole in the nose box but I might have to. Any ideas would be great, see pictures below of the harness I made. My thought was to drill 2 holes about 3/8 in the box use a plastic insert like on a cb radio mount to isolate the ssbolt from the inside of the holes metal, run external cable to that with a anderson plug so I can disconnect it. and then hard wire the inside of the box to the battery fused ect . Any thoughts.
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