Im new to trucking. I have a 2007 International Eagle 9200i. A few days ago, I noticed a delay in my headlights turning on, after flipping the light switch. Today the headlights are completely out. Both are brand new headlights, all other lights are functioning properly. Blinkers work, brake lights work, backup lights all work, trailer lights work, etc. Only the headlights and high beams dont work. The high beam indicator does not show up on the dash anymore when I switch the lever to high beams. What would cause this?

