I was changing the oil of my 1990 240 today and when I went to go drive it later that night I found that my low beams did not work. I proceeded to make sure all my connections were snug underhood for the electrical. Even after that did not fix anything I then (shamefully) hit the passenger side headlight and to my amazment it came on. I did the same thing to the driver side but it did not work. I went to the gas station and when I started it up neither of the lights came on. I did however find that my highbeams work. I tried changing the bulbs with new ones, but that did not fix it. I am sorta stuck and referred to my Chilton's manual but did not find anything specific on the wiring for headlights.