The harness adapter works, but was not long enough to reach the power distribution box inside the Leer 180 cap. I had to also use the included wiring in the plastic bag attached to the cap. Took considerable amount of time combining the 2 harnesses using heat shrink butt connectors and the correct size split loom, and routing the harness up behind the left side tail lamp assy. Its done now and working is what counts. In this case def not plug n play.