2019 Freightliner Cascadia: Trailer Light Fuse Location [2021]
Where is the Trailer Light Fuse on a 2019 Freightliner Cascadia? (Solved)
- CB-11 – Trailer Tail/Marker/Clearance Lights
- CB-12 – Trailer Left Turn/Stop and Right Turn/Stop
- Use the Fuse Puller: Most trucks have a small white or yellow plastic fuse puller tool clipped inside the fuse box. Use this to pull the suspect fuse out.
- Inspect the Metal Strip: Look at the "U" shaped metal wire inside the translucent plastic of the fuse.
Understanding the Trailer Lighting System
Pro Tips
- Two 20A J-case fuses (for F30)
- Three 15A Micro 2 fuses (for F31/F32)
- One 30A J-case fuse (for F47)
- One 50A circuit breaker (for the battery box)
The Critical Fuses (Under Hood PDM)

