can someone give me some advice, my car had an in dash stolen out of it, but all my wires were spliced into the original stock stereo wires so whenever i wanted to put the stock stereo back in, the adapter in the back was still there, i just had to cap off the wires going to my old in dash, question is after plugging in my adapter to behind my stock stereo, it turned on everything is ok but i have major static on fm radio, like antenna is not working, any ideas would be greatly appreciated