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Determine which post of the battery is grounded (connected) to the chassis. 6.4
If the negative post is grounded to the chassis (as in most vehicles), see step
6.5. If the positive post is grounded to the chassis, see step 6.6.
For a negative-grounded vehicle, connect the POSITIVE (RED) clip from the 6.5
battery charger to the POSITIVE (POS, P, +) ungrounded post of the battery.
Connect the NEGATIVE (BLACK) clip to the vehicle chassis or engine block
away from the battery. Do not connect the clip to the carburetor, fuel lines or
sheet-metal body parts. Connect to a heavy gauge metal part of the frame or
engine block.
For a positive-grounded vehicle, connect the NEGATIVE (BLACK) clip from the 6.6
battery charger to the NEGATIVE (NEG, N, -) ungrounded post of the battery.
Connect the POSITIVE (RED) clip to the vehicle chassis or engine block away
from the battery. Do not connect the clip to the carburetor, fuel lines or sheet-
metal body parts. Connect to a heavy gauge metal part of the frame or engine
block.
Connect charger AC supply cord to electrical outlet.6.7
When disconnecting the charger, turn all switches to off, disconnect the AC 6.8
cord, remove the clip from the vehicle chassis and then remove the clip from
the battery terminal.
See CALCULATING CHARGE TIME for length of charge information.6.9
FOLLOW THESE STEPS WHEN BATTERY IS OUTSIDE VEHICLE7.
A SPARK NEAR THE BATTERY
MAY CAUSE A BATTERY
EXPLOSION. TO REDUCE THE
RISK OF A SPARK NEAR THE
BATTERY:
Check the polarity of the battery posts. The POSITIVE (POS, P, +) battery post 7.1
usually has a larger diameter than the NEGATIVE (NEG, N, -) post.
Attach at least a 24-inch (61 cm) long 6-gauge (AWG) insulated battery cable 7.2
to the NEGATIVE (NEG, N, -) battery post.
Connect the POSITIVE (RED) charger clip to the POSITIVE (POS, P, +) post 7.3
of the battery.
Position yourself and the free end of the cable you previously attached to the 7.4
NEGATIVE (NEG, N, -) battery post as far away from the battery as possible –
then connect the NEGATIVE (BLACK) charger clip to the free end of the cable.
Do not face the battery when making the nal connection.7.5
Connect charger AC supply cord to electrical outlet.7.6
When disconnecting the charger, always do so in the reverse order of the 7.7
connecting procedure and break the rst connection while as far away from the
battery as practical.
A marine (boat) battery must be removed and charged on shore. To charge it 7.8
onboard requires equipment specially designed for marine use.