Disconnecting the battery cable on some vehicles may interfere with the functions of the on board computer systems and may require the computer to undergo a relearning process, once the negative battery cable is reconnected.
Several precautions must be observed with alternator equipped vehicles to avoid damage to the unit.
If the battery is removed for any reason, be sure to reconnect it with the proper polarity. Reversing the battery connections may result in damage to the one-way rectifiers.
When utilizing a booster battery as a starting aid, always connect the positive to positive terminals and the negative terminal from the booster battery to a good engine ground on the vehicle being started.
Never use a fast charge as a booster to start vehicles.
Disconnect the battery cable when charging the battery with a fast charger.
Never attempt to polarize the alternator.
Do not use test lights of more than 12 volts when checking diode continuity.
Do not short across or ground any of the alternator terminals.
The polarity of the battery, alternator and regulator must be matched and considered before making any electrical connections within the system.
Disconnect the battery ground terminal when performing any service on electrical components.
Disconnect the battery if arc welding is to be done on the vehicle.