So I purchased a 20s EVO and a DriftGhost 4k and I am trying to connect the supplied AUX lead from the AUX port to driftghost. Everthing plugs in fine. However I get no microphone audio from the video? 

Am I missing something or this not possible? The Sena manual mentions the Aux port is two way audio and the DriftGhost mentions in the manual that external mics will be picked up automatically?