well... that was the entire problem to begin with. you see... for the past 5 hours and 20 minutes i've been at work, and am still at work... so rushing out to check something isn't very easy to do, not to mention that i'm filling in for the manager running a shift, so it's even harder. thankfully my co-worker now was kind enough to not care and let me pop the HU into the car.
anyway... went out to move the car, and also check for the brake light.... and the car wasn't beeping when i put it in drive. don't remember if i tried reverse, but even after putting the car into park then drive before, it still beeped. maybe it just needed that extra shut down and restart for some reason. will let u know later, after i get home.