I'm not at all familiar with microphones, so sorry if this is a very simple issue. I have a Sony XAV-AX1000 headunit in my car and the standard microphone included with the kit. It's very similar to this cheap unit and has a simple 3.5mm TS output. I'm trying to replace it with a Rode Video Micro, a microphone with a 3.5mm TRS output in what the datasheet calls 'dual mono'. When I plug the Rode microphone into the headunit I get no microphone input unless I play with the positioning very lightly and leave it maybe 2mm out from being totally plugged in. It's crystal clear in that position.
How do I fix this and what portions of the barrel do you suspect are connected in this position? Would this work?