Volvo VNL 780 Operator's Manual page 454

444 MAINTENANCE AND LUBRICATION
Connect the jumper cables in the following sequence:
•
Good battery positive,
•
Dead battery positive,
•
Dead battery negative,
•
Disconnect the cables in the reverse order.
Avoid creating sparks by making all connections quickly and firmly. DO NOT permit
vehicles to touch each other when jump starting.
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