The car won't start and you think it is because you left a light on overnight. We will assume the battery isn't too old (maybe a 1-3 years) and that it is a negative grounded battery. How do you jump start the car?

Here's what you will need:

• A booster battery (essentially another working vehicle)
• Jumper cables in good condition

Here's what to do:

• Move the booster vehicle's hood near the stalled vehicles hood
• Turn off the booster vehicle
• Turn off all accessories in the stalled vehicle (Radio, heat, wipers, lights, etc.)
• Open the hoods of both vehicles

Attach the jumper cable clips as follows in this order:

• Attach one red clip to the positive post of the dead battery (Look for the "+" next to the post)
• Attach the other red clip to the positive post of the booster battery
• Attach one black clip to the negative post of the booster battery (Look for the "-" next to the post)
• Attach the other black clip to the engine block of unpainted metal of the dead battery car to ground the connection (Don't put it on the negative post)

Start the dead battery vehicle and let it run for the alternator to take over and charge the battery.  It should start, if not, there may be other problems with the vehicle and you may need a tow.

Disconnect the cables in the exact reverse order.  Off you go . . .