Ford 2015 EXPEDITION Owner's Manual page 273

272
Connecting the Jumper Cables
WARNING: Do not connect the end of the second cable to the
negative (-) terminal of the battery to be jumped. A spark may
cause an explosion of the gases that surround the battery.
Note: Do not attach the negative (-) cable to fuel lines, engine rocker
covers, the intake manifold or electrical components as grounding points.
Note: In the illustration, the vehicle on the bottom is used to designate
the assisting (boosting) battery.
1
3
Ensure that the cables are clear of fan blades, belts, moving parts of both
engines, or any fuel delivery system parts.
Roadside Emergencies
4
2
1. Connect the positive (+) jumper
cable to the positive (+) terminal of
the discharged 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 an exposed
metal part of the stalled vehicle's
engine, away from the battery and
the carburetor or fuel injection
system.