My interior lights will only work when the key switch is on
What is your question?
You have to turn on the key and then the interior lights work with the dimmer switch and everything but when the switch is off no lights will work on the inside of the truck
RepairPal Certified shops can diagnose and repair your 2006 Ford F-350 Super Duty. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.