Tail lights out!!

Just got a 85 300D Turbodiesel. While the brake, reverse and parking lamps work in the rear, the tail lights (when you're just drivin along) do not. Any suggestions? I checked the fuses. Although tired, not broken; and, it seems that the fuses are left/right as well, which means that one fuse would not control both left and right tail lights. What's going on wise ones?