# UNKNOWN UNKNOWN — ELECTRICAL SYSTEM:WIRING
> **FATAL** · NHTSA complaint `611579` · 2007-01-30 · UNKNOWN MANUFACTURER
## Severity
- **Deaths:** 1
- **Injured:** 0
- **Fire:** No
- **Crash:** No
- **Police report:** No
- **Medical attention:** No
- **Vehicle towed:** No
## Vehicle
- **Make:** UNKNOWN
- **Model:** UNKNOWN
- **Year:** —
- **Manufacturer:** UNKNOWN MANUFACTURER
- **Component:** ELECTRICAL SYSTEM:WIRING
## Narrative
LIFE LINE AMBULANCE LOST POWER WHEN DRIVING OVER RAILROAD TRACKS CAUSING SOMEONE'S DEATH**CC  THE SOURCE OF THE SHUTDOWN WAS DETERMINED TO BE A SHORT TO THE GROUND CIRCUIT TO WHICH THE AMBULANCE CONSOLE/CONTROL SYSTEM WAS CONNECTED FOR IGNITION POWER. A SMALL CUT THROUGH THE INSULATION WIRE 295A WHICH ALSO SUPPLIED ACCESSORY POWER TO THE AM-FM IN DASH RADIO WAS DISCOVERED, WHICH EXPOSED A BARE SPOT OF COPPER WIRE WHICH APPARENTLY SHORTED TO THE GROUND ON THE ADJACENT METAL CASE OF THE RADIO. TESTING ESTABLISHED THAT GROUNDING WIRE 295A WHILE POWERED CAUSED A DEVICE OVERLOAD OF THE FREIGHTLINER VEHICLE  TO IMMEDIATELY TRIP TO OPEN THE CIRCUIT, CAUSING THE AC FAN IN THE CAB TO SHUT OFF AND INITIATE THE 4 MINUTE TIMER TO SHUT DOWN THE 12 VOLT AMBULANCE CONSOLE. *JB
---
*Source: [NHTSA ODI](https://www-odi.nhtsa.dot.gov/downloads/) · AI Analytics · CC0 1.0*