[jsgold]

Hard to say for sure what this is....but here is my guess. First, check ALL fuses, see if you can identify the one for lights. You may have done this already, not sure. See if you can get hold of a meter and check voltage at the socket and see if you can try grounding the socket to get it to burn. I have not seen a headlamp set go out before but have seen ground wires break or burn to the point the socket or wire must be replaced or re grounded. Lastly, just a guess but I wonder if the high-low beam switch is possibly bad...it sits down near the bottom of the steering column. A rod runs to it from the handle on the column and switches it on and off..sorry not much help here.