Mazda Trucks 1987-1993 Repair Guide

Alternator Precautions


To prevent damage to the alternator and regulator, the following precautionary measures must be taken when working with the electrical system.

If the battery is removed for any reason, make sure it is reconnected with the correct 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 charger as a booster to start vehicles.
Disconnect the battery cables when charging the battery with a fast charger.
Never attempt to polarize the alternator.
Do not use test lights of more than 12V 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.
Never separate the alternator on an open circuit. Make sure all connections within the circuit are clean and tight.
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.