VT Hackney, Inc. (VT Hackney) is recalling certain model year 2014-2015 Kidron Refrigerated Trailers manufactured August 9, 2013, to June 15, 2015. The affected trailers have a main wiring harness that may not supply adequate power to the connector at the rear of the trailer. This rear connector is used when a second trailer is attached for doubles operation. As a result of the insufficient power, second trailer's anti-lock brake system (ABS) may not function properly. As such, these vehicles fail to comply with the Requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 121, "Air Brake Systems."