Good morning. New to the site. Have a 2001 F350 fleet truck with no brake lights. Few days ago, noticed the red light on the electronic brake controller stopped lighting up when brake pedal was depressed. (I bought this truck used, and the controller was installed when I got the truck.). Few days later, wife said no brake lights when following me home. Checked both bulbs, and found passenger side double filament bulb with top filament burned. Installed new bulb, still no brake lights. Next checked all fuses related to brakes. Found one 20-amp mini fuse burned. Replaced, but still no brake lights. Third, I replaced the brake light controller on the brake pedal. Still no brake lights. Any suggestions where to look next for the problem? Thank you all for any help you can offer me.