radio, alarm, and half dash lights died

[eclipsemustang]

So i thought i solved all my electric problems this fall because my car had been dying overnight, i replaced the battery, and have checked for battery drains, and my power locks and interior lights were draining my battery so i pulled the fuses on them so i could still drive the car. my car ran fine for a week after i solved those things but this morning i went to start my car and the right half of my dash lights quit (like the doors ajar light and such) my radio no longer works, and my alarm no longer makes any sound (and the alarm light stays on when i drive)
after testing i no longer have any battery leaks and all the fuses are fine so is this a battery problem or and alt problem? any input would be appreciated