Porsche 928 GTS 1994 Owner's Manual page 100

3. Connect clamp of minus-cable to negative (-)
terminal of booster battery (3).
4. Connect clamp on opposite end of cable to a
bare metal part (4) of car with discharged
battery. Connect clamp as far away from
battery as possible.
5. Start engine in the usual manner. If engine
fails to start, do not continue to crank but
contact nearest workshop.
6. With engine running, remove jumper cables
from both cars in exact reverse order: Steps
4 through 1.
7. Reconnect ground cable of booster battery.
Do not try to start car by pushing or
towing. Damage to the catalytic converter,
the transmission, and/or other components
of the car may result.
Start assist connecting points sequence
On right side of engine compartment you will
find a positive (+) battery post (remote connec-
tion).
First connect clamp at end of positive (+)
cable to the remote connection in the en-
gine compartment (+ arrow). Then connect
clamp at other end of positive (+) cable to
the positive (+) terminal of the booster
battery.
Next connect clamp at end of negative (-)
cable to the negative (-) terminal of the
booster battery. Then connect clamp at
other end of negative (-) cable to the en-
gine compartment strut rod (- arrow).
CAUTION:
The cable clamps must not contact each
other, and the plus-cable leading to the posi-
tive (+) post must not contact any metal part
of the car.
Do not try to start car by pushing or towing.
Damage to the catalytic converter and other
components of the car may result.
101