The Quad second station harness connects the main station control box with the second station control with the help of the primary and secondary harness. The Quad second station harness has two 12 pin connectors on the main station side and two 3 pin connectors on the second station side. One Quad second station harness is required along with two Command Link Plus primary and two secondary harnesses when rigging a second station. For use with Command Link Plus only.