Ford 2003 Explorer Owner's Manual page 202

Roadside Emergencies
Note: In the illustrations, lightning bolts are used to designate the
assisting (boosting) battery.
2. Connect the other end of the positive (+) cable to the positive (+)
terminal of the assisting battery.
3. Connect the negative (-) cable to the negative (-) terminal of the
assisting battery.
4. Make the final connection of the negative (-) cable to the provided
jumpstarting bolt.
201
2003 Explorer (exp)
Owners Guide (post-2002-fmt)
USA English (fus)