A kit for illuminating chain slots on a trailer includes a plurality of brackets, each having a first arm and a second arm. The second arm is oriented at an angle to the first arm and has a mounting area. A tool is provided for positioning a bracket adjacent a respective chain slot on the trailer and for holding the bracket in place adjacent the chain slot until the bracket is attached to the trailer. The tool has a portion configured to engage with the mounting area of the bracket. Lights are also provided, each light configured to be attached to a respective mounting area of the bracket after the bracket has been attached to the trailer and the portion of the tool has been disengaged from the mounting area. An electrical conductor is configured to connect the plurality of lights to an electrical wiring harness of the trailer.