2. Inspect the ends of the wires for cracks in the clamps, broken wires and corrosion (see chapter 1). White fluffy deposits under the insulation at the end of the wires near the clamp are a sign of corrosion in the wire. Such a wire should be replaced. Check the terminals for bolts, deformation and corrosion.
3. When removing wires, always disconnect the ground wire first and connect it last. Otherwise, you may accidentally short-circuit the battery terminals with the tool used to release the clamps on the battery terminals. Even if you are replacing only the positive wire, disconnect the ground wire from the battery first.
4. Disconnect the old cables from the battery, then follow each one to the ends and disconnect them from the starter solenoid and ground terminals (fig. 4.4, a, b). To ensure proper installation, mark the wiring diagram for each wire. To access one of the ground wire bolts, you will need to remove the battery tray (fig. 3.7).
Fig. 4.4, a. The battery ground wire is bolted to the battery shelf support bracket (A) and to the gearbox in the block with the drive axle (P)
Fig. 4.4, b. Connect the wire from the battery to the starter to the fuse box of the relay in the engine compartment. To disconnect it, lift the cover (1), pry up with a screwdriver and release the lug (2), lift and remove the drive cover (3), then unscrew the nut (4) and disconnect the wire (5) from the terminal
5. If you are replacing any or both wires, take them with you when you purchase new ones. Wires should always be replaced with identical wires. Wires have features that make them easy to recognize. Positive wires are usually red and have a larger cross-section. Ground wires are usually black and have a smaller cross-section.
6. Clean the threads on the solenoid terminal or ground point with a wire brush to remove rust and corrosion. To prevent future corrosion, apply a thin coat of battery terminal corrosion inhibitor or petroleum jelly to the threads.
7. Connect the wire to the electromagnet ground plate and tighten the nut/bolt securely.
8. Before connecting the new wire to the battery, make sure that its length is sufficient to secure it to the battery terminal without pulling on it.
9. First connect the positive cable to the battery, then the ground cable.