Ford 2002 Mustang Owner's Manual page 171

Roadside Emergencies
Connecting the jumper cables
1. Connect the positive (+) booster cable to the
positive (+) terminal of the discharged battery.
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.
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