Ford 1998 Crown Victoria Owner's Manual page 106

Roadside emergencies
Connecting the jumper cables
1. Position the vehicles so that they
do not touch one another.
2. Switch off the engine. Switch off
any unnecessary electrical
equipment.
3. Connect the positive (+) terminal
of the discharged battery (1) to the
positive (+) terminal of the booster
battery (2).
4. Connect one end of the second
lead to the negative (-) terminal of
the booster battery (3) and the
other end to a metal part of the
engine to be started (4), not to the
negative (-) terminal of the discharged battery.
5. Make sure that the jump leads are clear of moving parts of the engine.
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.
Jump starting
1. Start the booster vehicle and run the engine at moderately increased
speed.
2. Start the engine of the vehicle with the discharged battery.
3. Once the engine has been started, run both engines for a further three
minutes before disconnecting the leads.
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