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Today were going to be replacing the wiring on this trailer. We will be replacing a 4
pole flat, as you can tell this one is pretty beat up and worn, so it has to be replaced.
We are going to cut this wire off and we are going to replace this brown wire also. We
are going to cut this loose and pull the rest of our wire through, on this trailer here
it is pretty open so we can reach the wiring. Just in case though, if your wiring was run
in conduit and you are replacing it, do not pull all of this out yet. We will actually
tie on the new wires and use these wires to pull them through. We are going to cut off
all of this old wire here, and we are going to take off this old light too. I would like
to point something out on this 4 pole flat, you will notice there are actually 5 wires
coming out of it. What is happening is on the inside of this pin, which is for the running
lights, has two wires coming out.
The reason for that is we can split the running light circuit to both sides of the trailer.
Mainly that is used on boat trailers and other light duty ones. What is nice about that if
you have a running light on the side, chances are your running wire right next to it. You
can tap into your wiring without having to make a wire go all the way across. It basically
provides a short cut. This case we are going to run it all the way on one side and jump
over since we have a small trailer and no running lights. Now we are going to tape our
new wires to the old ones and pull it through the frame. It does not take much, just enough
to make it smooth so it does not snag anywhere. Now we simply pull the wire through. Before
we pull everything through, we are going to make sure we have enough leader to hang out.
This unit comes with a pre-wired ground wire so we are going to leave it at its maximum
length and this is where we are going to ground it at and well have a good idea of how much
slack we need to leave. At this point its a good idea to tape up all the wires together
that way it will keep them from getting tangled with anything else. Since we have our ground
here we are going to ground it but before that we are going to take this loop off for
a smaller one. Since we have an existing ground that works pretty good, we will use a smaller
screw. Always give it a twist when you crimp it down it will make a nice tight fit. We
will re-install our screw but first we will put a pit of dielectric grease on there to
help protect
it a little bit, electricity still flows
on
the ground and
the less rust the better. Now we can pull the rest of our slack out.