Q: How to inspect and replace battery cables?A: Periodically, inspect the entire length of each battery cable for damage, cracked or burned insulation and corrosion as poor battery cable connections can cause starting problems. Also, inspect the cable-to-terminal connections at the ends of the cables for cracks, loose wire strands and corrosion. White, fluffy deposits under the insulation at the cable terminal connection are a sign of corrosion and indicate that the cable should be replaced. Check the terminals for distortion, missing mounting bolts and corrosion. When removing the cables, always disconnect the negative cable first and hook it up last to avoid accidentally shorting the battery with the tool used to loosen the cable clamps. Even if only the positive cable is being replaced, disconnect the negative cable from the battery first. Disconnect the old cables from the battery, then trace each of them to their opposite ends and detach them from the starter solenoid and ground terminals. Note the routing of each cable to ensure correct installation. If replacing either or both of the old cables, take them with you when buying new cables to ensure you replace them with identical parts. Positive cables are usually red and larger in cross-section; ground cables are usually black and smaller in cross section. Clean the threads of the solenoid or ground connection with a wire brush to remove rust and corrosion. Apply a light coat of battery terminal corrosion inhibitor, or petroleum jelly, to the threads to prevent future corrosion. Attach the cable to the solenoid or ground connection and tighten the mounting nut/bolt securely. Before connecting a new cable to the battery, make sure that it reaches the battery post without having to be stretched. Connect the positive cable first, followed by the negative cable.