Lincoln 2010 Town Car Owner's Manual page 216

Roadside Emergencies
Connecting the jumper cables
1. Connect the positive (+) jumper 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.
216
2010 Town Car (tow)
Owners Guide, 1st Printing
USA (fus)