Ford 4L2Z-14300-AA Cable Assembly

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Periodically inspect the entire length of each battery cable for damage, cracked or burned insulation and corrosion. Poor battery cable connections can cause starting problems and decreased engine performance. Check the cable-to-terminal connections at the ends of the cables for cracks, loose wire strands and corrosion. The presence of white, fluffy deposits under the insulation at the cable terminal connection is a sign that the cable is corroded and should be replaced. Check the terminals for distortion, missing mounting bolts and corrosion. When replacing the cables, always disconnect the negative cable first and hook it up last or the battery may be shorted by the tool used to loosen the cable clamps. Even if only the positive cable is being replaced, be sure to disconnect the negative cable from the battery first. Disconnect and remove the cable. Detach any battery cable ties or retaining clips. The positive battery cable is fastened to the starter relay and the starter. The negative battery cable is fastened to the inner fenderwell, the starter motor lower retaining bolt, the engine block or the frame rail depending on the model year of the vehicle. Make sure the replacement cable is the same length and diameter. Clean the threads of the relay or ground connection with a wire brush to remove rust and corrosion. Apply a light coat of petroleum jelly to the threads to prevent future corrosion. Attach the cable to the relay or ground connection and tighten the mounting nut/bolt securely. Before connecting the new cable to the battery, make sure that it reaches the battery post without having to be stretched. Clean the battery posts thoroughly and apply a light coat of petroleum jelly to prevent corrosion. Connect the positive cable first, followed by the negative cable.