Ford 1997 Aerostar Manual page 224

2. Do not disconnect the battery of the disabled
vehicle. You could damage the vehicle's
electrical system.
3. Park the booster vehicle close to the hood of
the disabled vehicle. Make sure the vehicles
do not touch each other. Set the parking
brake on both vehicles and stay clear of the
engine cooling fan and other moving parts.
4. Check all battery terminals and remove any
excessive corrosion before you attach the
jumper cables.
5. Turn on the heater fan in both vehicles. Turn
the function selector knob to the V
position. Turn off all other switches.
Connecting the jumper cables
1. Connect one end of the first jumper cable to
the positive (+) terminal of the discharged
battery. (You can connect either jumper cable
to the positive (+) terminal, as long as you
use the same cable for both positive
terminals.) Most jumper cables have a red
cable and a black cable. The red cable is
generally used for the positive terminals and
the black for the negative ones.
2. Connect the other end of the first cable to
the positive (+) terminal of the booster
battery.
3. Connect one end of the second cable to the
negative ( ) terminal of the booster battery
— NOT to the discharged battery.
4. Connect the other end of that cable to a
good metallic surface on the engine or frame
of the disabled vehicle. The following
illustration shows where you can find a
metallic surface.
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