Purchased a cassette radio today to replace my 02 non-cassette Taurus radio. Everything works fine and all the plugs matched perfect (the cassette was from an 01 Taurus). When turning on the lights, the dash and climate controls all light at the same time but the radio controls light about 2 seconds later. Not a big deal, but does anyone know why? I just don't want it to be an indication of something going wrong later and then it might be too late to exchange the radio.