it only starts after 5 minutes of the car running?
anything to do with door being opened or closed?
do you have the seat belt plugged in whenit does this?
there should be two wires running from the seat belt buckle... if you think the internal switch is not acting right you can splice these wires and it should keep the light from coming on...
sorry for being rude in your other thread...
oh, and no, this isn;t really bad, should have no effect other than annoying you