Ford Econoline Owner's Manual page 183

3. Disconnect the primary battery
ground cable.
4. Disconnect the primary battery
positive cable.
Connect:
Secondary positive cable remains energized after disconnection.
make sure the tool does not contact any ground surface.
1. Reconnect the primary battery
positive cable.
2. Reconnect the primary battery
ground cable.
3. Unwrap the secondary positive
cable and reconnect to the primary
battery terminal.
2004 Econoline (eco)
Owners Guide (post-2002-fmt)
USA English (fus)
Maintenance and Specifications
183