HI guys got myself a new radio sat nav dvd player head unit from ebay. fitted it in and its working fab how ever as soon as the car moved I loose the radio. I follower the instructions that say the ariel must be on the glass and the copper bit on metal post under the side trim. but I don't have a removable panel there just an air bag. see picture for what I meen. is there an adapter or something I can use to connect my roof ariel to the dab box. I go on long trips with the kids and need radio on. the mp3 and dvd cds work fine but wanted to get the dab going. get full bars on the drive