So I put in an aftermarket headunit in and my antenna stop go up and down, was working perfect before, I did a bit google and found people suggests to connect the amp signal/antenna wire (blue) at the back of the headunit to the Ant A W-L(white-blue) and Ant B(white-red) together, so I tried connect them today but my antenna was still dead, and I tested all 3 wires and got ~12V when headunit was on, can anyone tell me did I connect the wrong wires or is there any other ways to do this?