Alfa Romeo Giulia 952 D-SEDAN 2016 Owner's Handbook Manual page 138

Cable connection
54)
Proceed as follows to carry out a jump
starting:
connect a terminal on the end of the
positive cable from the remote positive
pole (+) of the car with flat battery;
connect the terminal on the opposite
end of the positive (+) cable to the
positive (+) pole of the auxiliary battery;
connect a negative cable end terminal
to the negative (-) pole of the auxiliary
battery;
connect the terminal on the opposite
end of the negative (-) cable to the earth
point (-) on the vehicle with the battery
flat;
start the engine of the car with an
auxiliary battery, let it run for some
minutes at idle and then start the engine
of the car with flat battery. In case a
portable battery is used, before starting
the vehicle, wait a few seconds after
completing the connection.
Cable disconnection
Once the engine is started, remove the
connection cables in reverse sequence,
as shown below:
disconnect the negative cable end
terminal (-) from the earth point (-) of the
car with flat battery;
disconnect the terminal on the
opposite end of the negative cable from
136
the negative (-) pole of the auxiliary
battery;
disconnect the terminal on the
opposite end of the positive (+) cable
from the positive (+) pole of the auxiliary
battery;
disconnect the terminal on the end of
the positive cable from the remote
positive pole (+) of the car with flat
battery.
WARNING
136) Do not get too close to the radiator
cooling fan: the electric fan may start;
danger of injury. Scarves, ties and other
loose clothing might be pulled by moving
parts.
137) Remove any metal objects (e.g. rings,
watches, bracelets), that might cause an
accidental electrical contact and cause
serious injury.
138) The batteries contain acid that can
burn skin or eyes. Batteries produce
hydrogen, which is easily flammable and
explosive. Thus keep away flames or devices
which may cause sparks.
IMPORTANT
53) Never use a fast battery-charger to
start the engine as this could damage the
electronic systems of your vehicle,
particularly the ignition and engine fuel
supply control units.
54) Do not connect the cable to the negative
terminal (–) of the flat battery. The following
spark could lead to battery explosion and
cause serious harm. Only use the specific
earth point; do not use any other exposed
metallic part.