Do you need to disconnect battery before changing alternator?
Disconnect the battery. Never work in the engine bay of a vehicle without first disconnecting the battery for safety. Working on the alternator without disconnecting the battery could result in getting shocked or damaging the vehicle. You can leave the positive cable attached.
Does the alternator connected directly to the battery?
Attach a cable directly from the alternator output post to the positive side of the battery. This allows for full output from the alternator to the battery when heavy electrical demands are placed on the alternator.
What would cause an alternator to not charge?
This means that you could have a weak alternator, or a poor connection at the battery terminals. You could also have a loose drive belt, which is what supplies power to the alternator itself. If the drive belt is loose or not working properly, the alternator will not charge.
How can I WIRE an alternator to a battery?
Attach a cable directly from the alternator output post to the positive side of the battery. This allows for full output from the alternator to the battery when heavy electrical demands are placed on the alternator. Wire the alternator controls.
How do you hook up an alternator?
Connect a 10-gauge wire from the output stud on the alternator back to the positive battery terminal. Make both connections with a solderless ring terminal. This connection can be made at the starter relay also, as long as it connects to the same terminal as the positive cable from the battery. Reconnect the negative cable to the battery.
What gauge wire for alternator?
Tuff Stuff recommends an 8-gauge wire for its 100-amp alternators, and a step up to a 6-gauge wire if the battery is in the trunk. A 140-amp unit should use a 6-gauge wire, and 4-gauge to the trunk.
How do you wire a starter solenoid?
Run a section of 18-gauge wire from the “B” terminal on the solenoid to the “S” terminal on the starter motor. Strip 1/4 inch of wire from the end of the wire using the wire strippers and then crimp a blue ring terminal on each end. Then connect the wiring to the terminals using the open-end wrench set.