Hopefully this is a simple question. Last year I installed a new head unit but the existing car antenna that plugs into the head unit wasn't long enough because the plug for it was on the other side. So, I got an antenna extension but the radio never got reception. When I put my hand over the radio, the signal would come in much better. Is there a specific antenna extension that I need or does one size fit all? Because it plugs in to both the existing antenna and head unit no problem. I tried buying an antenna adapter on eBay made specifically for this car, but both ends are male ends which wont work because the cars antenna is a male end. Any input? Thanks.