Fig. 180 How to connect the jump leads

In  fig. 180, the flat battery is A and the charged battery B.

Jump lead terminal connections – Switch off the ignition on both vehicles .

1. Connect one end of the red jump lead to the positive  fig. 180 + terminal of the vehicle with the flat battery .
2. Connect the other end of the red jump lead to the positive terminal + in the vehicle providing assistance.
3. Connect one end of the black jump lead to the negative terminal + on the battery of the vehicle providing assistance.
4. Connect the other end of the black jump lead to a solid metal component which is bolted on  to the engine block, or onto the engine block itself of the vehicle with the flat battery. Do not connect it to a point near the battery .
5. Position the leads in such a way that they cannot come into contact with any moving parts in the engine compartment.

Starting
6. Start the engine of the vehicle with the boosting battery and let it run at idling speed.
7. Start the engine of the car with the flat battery and wait one or two minutes until the engine is “running”.

Removing the jump leads
8. Before you remove the jump leads, switch off the headlights (if they are switched on).
9. Turn on the heater blower and rear window heater in the vehicle with the flat battery. This helps minimise voltage peaks that are generated when the leads are disconnected.
10. When the engine is running, disconnect the leads in reverse order to the details given above.

Connect the battery clamps so they have good metal-to-metal contact with the battery terminals.

If the engine fails to start, switch off the starter after about 10 seconds and try again after about half a minute.

WARNING

• Please note the safety warnings referring to working in the engine compartment  “Working in the engine compartment”.
• The battery providing assistance must have the same voltage as the flat battery (12V) and approximately the same capacity (see imprint on battery). Failure to comply could result in an explosion.
• Never use jump leads when one of the batteries is frozen. Danger of explosion! Even after the battery has thawed, battery acid could leak and cause chemical burns. If a battery freezes, it should be replaced.
• Keep sparks, flames and lighted cigarettes away from batteries, danger of explosion. Failure to comply could result in an explosion.
• Observe the instructions provided by the manufacturer of the jump leads.
• Do not connect the negative cable from the other vehicle directly to the negative terminal of the flat battery. The gas emitted from the battery could be ignited by sparks. Danger of explosion.
• Do not attach the negative cable from the other vehicle to parts of the fuel system or to the brake line.
• The non-insulated parts of the battery clamps must not be allowed to touch. The jump lead attached to the positive battery terminal must not touch metal parts of the vehicle, this can cause a short circuit.
• Position the leads in such a way that they cannot come into contact with any moving parts in the engine compartment.
• Do not bend over the batteries. This could result in chemical burns.

Note
The vehicles must not touch each other, otherwise electricity could flow as soon as the positive terminals are connected.