There are many ways to check if you need a new alternator. Your car will not run properly without one.
see this link How_can_you_tell_if_it's_your_battery_or_alternator_that's_bad
i need help with my new alternator.
Voltage regulator or loose wire.
if your truck is running and you disconect the batery and the truck dies then its the alt
A new battery or one that tested good is in the vehicle and the car is still losing power. the alternator is what charges the battery while the vehicle is operating.
Any auto parts store where you will go to buy a new alternator can tell you what you need.
Disconnect the batery cable from the battery while the vehicle is running, if it dies, you need a new alternator there, buddy.
It may be that you need a new alternator.
If you have a new alternator its as simple as run the one wire to the solenoid. If you are converting the alternator to a one wire, you will need an external regulator. If you have a new alternator its as simple as run the one wire to the solenoid. If you are converting the alternator to a one wire, you will need an external regulator.
You will need to remove the alternator belt. Remove the wiring harness from the back of the alternator. Remove the alternator retaining bolts. Reverse the process to install your new alternator.
Only if the old battery is defective