Yes you should have three harness's going into the back of the monsoon head unit.
The top one is actually standard VW harness wiring for dubs with steering wheel controls. And it also supplies a separate power supply that allows you to run the radio without the key.
The top one is actually standard VW harness wiring for dubs with steering wheel controls. And it also supplies a separate power supply that allows you to run the radio without the key.