I would check your wiring from the fuse box to the tail lights, spesially ground wires. Check if there is 12V running to the lights with multimeter. You mentiouned tail lights stopped working, did you mean both sides or just one side?
Just verified schematic for your 2008 Sebring. Possible issue with the 12V wire running from the fuse box and splits into two wires (left and right tail light), driver door side next to the driver seat. If there is some type of moisture wires connections might be corroded. Ive seen this is a common issue with the cars. Let me know what you find out.
Sorry for the late response, I was able to fix my problem last weekend. The wire was rusted and broken near the drivers door. Looks like the moisture was getting inside through rusted hole. Repairing the wire fixed my problem.