FORD 2010 Focus v.3 - Manual (Page 208)

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.
+ –
+ –
+ –
+ –
Roadside Emergencies
208
2010 Focus (foc)
Owners Guide, 3rd Printing
USA (fus)