Do I need a new alternator?

[LJ70kid]

Hey All,

The truck is coming along well BUT...recently, when I turn the ignition on, the battery, t-belt and filter light stays on...Prior to yesterday, after the engine turned on, the lights would turn off.

According to the vault meter the battery is still charging but from what I have seen in the past, it is not charging as high as before.

Any advise? Is my alternator on the way out?

Cheers
Dan

[manwithav8]

If your not charging above 13v then your alt needs to be looked at.

Also check charge relay as often when the alt goes it can take the relay with it.