 2000 Ford F350 Super Duty--high beams don't work
Hello,
I'm posting this for my nephew who asked me to see if I could find some help for him.
He has the above pickup with a 6 speed 7.3L Power Stroke engine. The low beam on the headlights works fine, but the high beams won't work at all. He has replaced the dimmer switch and has replaced the headlights, but they still won't work. What should he check next?
Thanks for any help you can provide! | 
