I did my best to make my video clear so people can understand. I was trying to find a video on UA-cam to help me to solve OEM microphone problem, but there was none. So, I spent quiet some time to figure out a solution. First, I connected microphone wires to my computer and gave it 5Volt from one of USB ports in my computer. It worked great without any resistor, but when I connected it to my car, it did not work. Then, I remembered a clue that I got from google. So, I connected the resistor and it worked. I hope my video helps you out.