Interior lights dim under hard acceleration

I'd check for a loose battery terminal. See if you can wiggle them with your hands.
I had a ground post that was borderline stripped that would give me the same symptoms.
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I do have a bigger amp alternator sitting in my room so maybe that will cure it.
the AC coldness wouldn't be a sign, what I was talking about is you would see the lights dim and the volt meter drop more then .5-1 volts when turning the AC on, you might also notice as you accelerate the AC doesn't blow air as hard out the vents, coldness usually has to do with refrigerant level in the AC system.




my alt is new only like 4 months old also