How to Install a Trailer Wiring Kit | eHow

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K.K. Lowell

K.K. Lowell is a freelance writer who has been writing professionally since June 2008, with articles appearing on various websites. A mechanic and truck driver for more than 40 years, Lowell is able to write knowledgeably on many automotive and mechanical subjects. He is currently pursuing a degree in English.

You see them all the time on websites like Craigslist, "Great trailer, just needs lights and wiring." You need a trailer, but that part about lights and wiring has you concerned; you're not sure you could handle the job. Well, relax and go get that trailer and grab some tools. In no time you'll have a great little trailer with lights that you installed yourself and that work.

Remove any old lights from the trailer. Mount the new lights supplied with the kit (using the included screws and nuts) in the brackets where the old taillights were. These lights get their ground connection through the mounting screws, so be certain to remove any rust where the nut will contact the light bracket.

Separate the white wire from the multicolored cable, leaving about 4 feet still connected. Run the remaining wires down the inside of the left side of the trailer frame. Secure in place with nylon wire ties.

Using a solderless butt connector, connect the brown wire in the cable to the brown wire of both taillights.

Connect the green wire in the cable to the red wire of the right taillight using a solderless butt connector.

Connect the yellow wire in the cable to the red wire of the left taillight using a solderless butt connector.

Cut the white wire off a few inches past where it is still joined to the other wires in the cable. Install a solderless ring terminal on the cut end, and attach the terminal to the trailer frame with a self-tapping screw. Remove the paint where the ring terminal touches the trailer frame.

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How to Install a Trailer Wiring Kit | eHow