I have a 2001 ford focus and have been having trouble with the radio. All it seems to pick up is static, it searches but cannnot find any stations. It is an old tape player one, and the tape still works fine so there is no problem with the speakers. Strangely the only time it work is if it is raining hard when it is able to pick up the stations. Have tried disconnecting and reconnecting the arial but this made no difference. Any ideas??