Turn signals usually run off a round flasher relay located at the bottom of the main fuse panel. If your park lights are out, check the headlight switch circuit specifically, as these are often fused together.
Always check the area between your battery box and the engine. Many FL80s have in-line fuse holders or circuit breakers here that supply constant power to critical systems like the Transmission Control Module (TCM). 1994 FL80 Fuse Diagram Overview 1994 freightliner fl80 fuse box diagram
Understanding the layout of your 1994 FL80 is crucial for electrical troubleshooting. The vehicle generally uses two main hubs for power distribution: Turn signals usually run off a round flasher