Possible security beep?

[_DieselPower_]

So today I took apart my dash and instrument cluster to replace a burnt out bulb. My air bag light has been on since I installed my aftermarket radio so I just switched bulbs and used that one. I noticed that I was missing a bulb for the security light and I decided that it wasnt that big of a deal and put everything back together. So I started my truck and a few seconds after she started I got 3 beeps from my fuse block area under my dash with a second in between beeps. It takes about 20 seconds and itll begin to beep again. So I disconnected the battery cables trying to reset the system and I started her up again and the beeps came back. Anyone got any idea

 

[Tncoalroller88]

id say the beeps is because the air bag light is missing in the dash ??? not sure tho just a guess

 

[Zmann]

Good call IMHO

sounds like a cause and effect diagnoses

 

[_DieselPower_]

Its done it before when I took the dash apart to install the radio and it did it after my pillar gaugues went in but Ive always disconnected my battery cables and its gone away