On a 1994 Freightliner FL80, there are usually two main fuse panels:
In the 1994 Freightliner FL80, the main fuse box is located inside the cab, typically on the driver’s side.
This panel uses ATC / ATO blade fuses.
| Fuse Position | Amp Rating | Circuit / Component Protected | | :--- | :--- | :--- | | 1 | 15A | Stop lamps, turn signals, hazard flashers | | 2 | 10A | Instrument cluster gauges (fuel, temp, oil pressure) | | 3 | 15A | Dome light, clearance/marker lights, dash backlighting | | 4 | 20A | Windshield wiper motor & washer pump | | 5 | 10A | Radio memory, power port (cigarette lighter) - key-off power | | 6 | 15A | Heater blower motor (low/med/high speed) | | 7 | 10A | Right-hand low beam headlamp | | 8 | 10A | Left-hand low beam headlamp | | 9 | 10A | Right-hand high beam headlamp | | 10 | 10A | Left-hand high beam headlamp & high beam indicator | | 11 | 5A | Instrument cluster illumination (dimmer controlled) | | 12 | 20A | Power door locks (if equipped), cab power seat | | 13 | 10A | A/C clutch relay, engine ECM (if electronic) | | 14 | 15A | Backup lamps, trailer reverse lights | | 15 | 30A (Circuit breaker) | Electric trailer brake controller (if factory wired) | | 16 | 25A (Circuit breaker) | Power window circuit (if equipped) |
If nothing turns on when you turn the key: 1994 freightliner fl80 fuse box diagram
Disclaimer: Freightliner chassis numbers (VIN) determine the exact layout. If your truck has a Cummins M11 or Detroit Diesel Series 60 engine, the ECM fuse locations are critical. Always consult the specific owner's manual located in the cab or verify against the label on the underside of your fuse box cover.
Since Freightliner did not have a single “universal” diagram for 1994, the following is a representative diagram based on the most common factory configuration. Use it as a starting point. Always verify with your truck’s specific build sheet or visual inspection of the fuse panel. On a 1994 Freightliner FL80, there are usually
| Fuse Position | Amperage | Circuit / Component Protected | |---------------|----------|-------------------------------| | 1 | 15A | Left Headlamp (Low Beam) | | 2 | 15A | Right Headlamp (Low Beam) | | 3 | 10A | Left Turn Signal / Parking Light | | 4 | 10A | Right Turn Signal / Parking Light | | 5 | 20A | Windshield Wiper / Washer Motor | | 6 | 25A | HVAC Blower Motor (High Speed) | | 7 | 10A | Instrument Cluster (Gauges, Warning Lights) | | 8 | 15A | Radio / Cigarette Lighter / 12V Power Port | | 9 | 5A | ECM Keep-Alive Memory (if equipped) | | 10 | 15A | Back-up Lamps / Reverse Switch | | 11 | 20A | Stop Lamps (Brake Lights) | | 12 | 10A | Marker / Clearance Lights | | 13 | 15A | Horn / Dome Light | | 14 | Circuit Breaker (20A) | Power Door Locks (if equipped) | | 15 | 30A | Main Ignition Switch Feed |
