Trailer adapter cable X-6035 to change from a civilian trailer 7-way flat blade electrical plug to a Military trailer plug. (MS75020-1 to Pollack 12-707) Cable provides tail lights/marker lights, right turn, left turn, brake, ground connections. 48 inches overall length. 14 awg M13486/10-1 cable (ozone resistant). Made in USA.
See p/n PK12716 to change from the 7 way to the 4 way plug.
If you need to change the voltage going to the trailer please see product part number UTC2412RVEB.