I looked at the Mitchell shop manual for the 98 camry and there is 2 different relays that control the headlights. The first relay is contolled by the manual switch that is on the left side of the steering column. The second relay is
called the intergration relay and is controlled by the drivers door switch that
is in the door jam. The inergration relay might be what is turning your lights on at random times. This is a dealer item part only and is not the relay that
is located in the fuse blocks. It might be located under the dash behind the instrument cluster????...........
