Help Alternator ? Options

[bdog_v]

Hello I have a 94 celica gt while idling at night with the lights on heater on and rear defroster the lights will dim and the battery warning light will come on.
I believe the alternator is dieing. It only happens at idle and it comes and goes. I'd like to get it fixed before it leaves me stranded somewhere.
I am wondering?
-Is there a voltage regulator somewhere outside of the alternator or is it internal? I don't want to replace the alternator when it could be something else that regulates voltage.

-Also where is the best place to get an alternator for this beast? Usually these foriegn alternators go for over $100 bones yikes....


Thanks guys...

[bccentaur3]

So you are planning on getting rid of all your current grounds and just run one big ground wire? I would keep all the grounds as is and just get some fairly thick gauge wires to help out a little. Like an extra one on the alt maybe?

Why not take the alt out and get it tested? Who knows it might have AIDS or HIV. Its better to get tested sooner or later.

If I remember correctly theres a ground that goes from the starter to chasis and one to the tranny. I would get rid of those.