Gases emitting from the battery can be explosive. Keep cigarettes, lighters, or any spark or open flame away during this procedure.
Do not attempt to push-start your vehicle. This could damage the engine.
Avoid contact with any battery acid � it is corrosive to skin and clothing.
Be certain the input to your car is 12 volts. Do not use a 24-volt power supply, as this can cause harm to your vehicle�s electrical system.
Do not disconnect the battery of the disabled vehicle. This could damage the electrical system. Be certain vehicles ARE NOT TOUCHING. Also, be certain that you do not become a human "bridge" between the two vehicles. Electricity can and will travel through a person�s body.
Jump Start
Assure battery terminals are clean. Remove excess corrosion if necessary.
Position cars close enough to extend cables between them. Set parking brakes in both.
Switch off all accessories, except for the heater fan. Turn it on (in both cars) to help protect against an electrical surge.
Connect the positive (+) terminal (use red cable) of the disabled battery to the positive (+) terminal of the boosting battery. Be careful to keep the clips on the jumper cables from touching together.
Connect the remaining booster-cable clip to the negative (-) terminal (use black cable) of the booster battery. Connect the other end to the alternator mounting bracing stud of the disabled vehicle. DO NOT CONNECT DIRECTLY TO THE NEGATIVE (-) TERMINAL OF THE DISABLED VEHICLE. This could cause sparks that could lead to an explosion.
Start the boosting vehicle and rev the engine slightly.
Start the engine of second vehicle.
Run both vehicles for three minutes before disconnecting leads.
Remove cables in reverse order. (Both negative [-] sides first.)
Allow jumped car to run for awhile to "relearn" its idle position.