Ford Focus 2004 Owner's Manual page 142

Roadside emergencies
To connect the leads
Flat
battery
• Position the vehicles so that they
do not touch one another.
• Switch off the engine and any
electrical equipment.
• Connect the positive (+) terminal
of the flat battery to the positive
(+) terminal of the booster battery.
140
• Connect one end of the second
lead to the negative (−) terminal of
the booster battery and the other
end as far away from the battery as
possible to the engine block or the
engine mount of the engine to be
started. Do not connect to the
negative (−) terminal of the flat
battery.
• Make sure that the jump leads are
clear of any moving parts.
To start the engine
• Run the engine of the vehicle
with the booster battery at
moderately high speed.
• Start the engine of the vehicle
Booster
with the flat battery.
battery
• Run both vehicles for a further
three minutes before disconnecting
the leads.
• Disconnect the leads in the
reverse order.
disconnecting the leads. The peak
voltage could blow the bulbs.
Do not switch on the
headlights when