2. Inspect the wire connections to the battery terminals for cracks, poor contact, and corrosion. Deposits in the form of a white powder under the insulation means that the wire is corroded and needs to be replaced.
3. When disconnecting the battery, start with the negative wire, and when connecting, connect the negative wire last. Otherwise, if the positive terminal is loosened, the key may accidentally touch the housing part and cause a short circuit. Even if only the positive wire needs to be disconnected, disconnect the negative one first.
Warning. If your car's audio system is equipped with an anti-theft protection, make sure you know the unlock code before disconnecting the battery.
4. Disconnect the wires from the battery, then trace them to opposite ends and disconnect from the starter terminal and from ground. Remember how the wires are laid so that they are laid the same way after replacement (Fig. 4.4, a-e).
5. If you are replacing one or both battery cables, take them with you when you go shopping for new ones. It is important that the new wires are identical to the old ones. The wires are different: the positive wire usually has red insulation and a large cross section. The negative wire has black insulation and a smaller cross section.
6. Remove rust from the threaded connections on the ground and on the starter with a wire brush. Lubricate the connections with petroleum jelly.
7. Connect the wire ends to the ground and to the starter and securely tighten the fasteners.
B. Before connecting the wire to the battery terminal, make sure that the wire is long enough to reach the terminal without additional tension.
9. Connect the positive wire first, then the negative.