Charging problem

[hofficergrover]

Ok it is a 92 GL 5 speed. Was on my way home and my aftermarket tach jumps rpms and shuts off. That didn't bother me at all so i continue to drive home. Then the charge light starts to come on so i shut the radio off and fog lights so the light goes off. Then cursing at 60 the light starts to come on again so i let off the gas it goes out after 10 mins go by the light just stays on. Would it be the alt? I'm pretty sure it is, but want to have others input.
Thanks for the help guys.
Also could i use a 88 alt?

[wybnrml]

Have you replaced the Fusible links. My charge light would come on from the fusible links being bad. But it could be the alt. Maybe check the battery teminals also.

[Damkid]

you should be able to use the 88 alt. swap it out and see what happens

[GenevaDirt]

check the belt tension. You can have the alt. tested at autozone if the belt is ok.

[1988redfordfestiva]

i bought an aftermarket volt metter-digital so i know how many volts it has and to make sure the alt is charging i had to buy a alt from autozone

[hofficergrover]

I changed them and works great now i tested the alt that was on car was bad also the fuse was bad as well, but i got it going all good now.

[Kraig]

I had that problem and it was corroded wiring connections. Drove me crazy for a week!