Chosen Solution

The brights no longer work but the low beams do. I have checked fuses, replaced one of the bulbs, and tried out a new switch. What should I check next?

Andrew Hindman , check the relays in the fuse box next to the battery. It should be the “Quad” relay

The arrow shows the fuses for the headlights, but you said they are okay, so that leaves the relay, or a short/loose connector in the harness. Hope this helps, good luck.