Since the guy messed with my phone car kit the other day my door sills have not worked properly. If the engine is running and I stop and open the door, they come on, but only for 4 seconds and then go out again. Even though the internal dome light is still on. I'm thinking the phone chap changed a wire somewhere by mistake when putting it all back together as the radio stays on for about 4 secs after you switch off. Any ideas?