Regularly check the length of every battery cable to check whether they are damaged, the insulation is broken or burnt, and corroded as improper contact can cause a starting trouble and reduced engine performance. Inspect cable-to-terminal connections at each end, checking the connections, both at the ends and at the connections, for cracks, loose strands of wire and corrosion, white, fluffy deposits under the insulation are indications of corrosion and require replacement. Removing cables: Every time you have to do it, always ensure that you disconnect the negative cable first and reconnect it last so that the battery is not shorted. Unplug the old cables of the battery, follow them to the opposite points and remove the cables of the starter solenoid and ground terminals and observe the routing to ensure proper installation. When replacing cables, make sure that you take the old ones so that you get the same parts, since when dealing with positive cables the cable is usually red and bigger whilst when dealing with ground cable, it is usually black and smaller. Wipe the solenoid or ground connection threads with a wire brush to get off rust and corrosion, and put a small amount of corrosion inhibitor or petroleum jelly to avoid future problems. Connect the cable to the solenoid or the ground connection and tighten the mounting nut or bolt. Prior to hooking a new cable to the battery, make sure the cable does not stretch to reach the battery post, hooking the positive cable with the negative cable as the last.