My 1997 Isuzu Trooper's headlights are turning on by themselves
mostly at night when the temperature drops. This is draining the
battery almost dry. The Trooper dealer has no idea why this is
happening. Can anyone help?

bad switch?

Hey Kclan1575, Did you figured it out yet? My friend is having the same problem with her '95 Trooper, Don't know what to do. She took it to a repair shop and was told the switch was bad, Is that it?