F 350 2WD Super Duty V8-7.3L DSL Turbo VIN F (1999)
Standby Power Supply: Service Precautions
WARNING: To avoid accidental deployment and possible personal injury, the backup power supply must be depleted before repairing or
replacing any air bag Supplemental Restraint System (SRS) components. To deplete the backup power supply energy, disconnect the battery
ground cable and wait one minute. Be sure to disconnect auxiliary batteries and power supplies (if so equipped).