Frickin' Computer Cars, Plymouth Voyager

Not sure if '98 is the same, but I had a '01 Caravan that the low beam would work on one side, high beam on the other. Changed out bulbs, etc, no difference. Cleaned the pins on the front control module that's bolted to the fuse box, no change. Pulled it apart again, and gave all the big flat pins a *slight* twist.. not enough to break them, and not enough so it wouldn't go back together.
All worked great after that.