Constant Dinging from behind Dash (not airbag)

This is my first post on this site, so please take it easy on me, I know my way around a 5.0 fairly well.

I was driving home the other day when it started to rain so I turned my wipers on and my lights (it's the law here). Well as soon as I turned my lights on, my car starts beeping. No the air bag beep, but the door chime ding. It is constant. ding, ding, ding, ding....forever. It only stops when I turn the lights off. So I pull over and check all my lights. All are working, turns work, I did find that I have a high beam bulb out, but I usually run low beam.

So I fiddled under the dash a minute to find a white box behind the knee bolster area. This is what makes the door ding sounds, seat belt warning, left lights on when key is out, etc. Well I pulled a wire on it to make it stop so I could continue on my way home, but it did light up the seatbelt light. I went ahead and plugged it back in this morning, but it still makes the sound.

Anyone have a clue of what is going on, why does it constantly beep when the lights are on?

Thanks,
jclaudii

Sorry, It's a 92 mustang gt convertible. I believe so, because it beeps when the door is open and lights are on (key off), on either side and it stops when the doors or shut. My rear view is in the back seat, I need to put that back on for interior lights. Arkansas heat makes it fall off each year. This year it took some windshield with it

I think I confused you.

It makes noise whenever the lights are on and the key is on. The car always dings when the door is open and lights are on. I'm going to start looking at the wiring diagram in the back of my haynes and see if I can spot anything. I'll have to keep looking I guess.

Sorry, for not posting back...

To fix the dinging, I just unhooked the white dinging box under the dash. I just have to remember I leave the headlights on now

Hopefully you found it, it's right above the break pedal.