When putting in my backup camera, I had to u plug the airbag light on the top of the infotainment center. When I plugged everything back in, the light does not work now and the airbag light on the dash is on. How can I fix this? 2004 Lariat 5.4

 

First thing to try is just unplug and plug it back in and make sure it's securely connected.

 

You do not have any additional non factory wiring going to the air bag system right?
You had to disconnect it why?
You did not hook up any wires to the air bag circuit right?
Have the air bag codes read if it does not flash out a code with the light
That should give you some direction
Maybe you left something like the backup power supply disconnected (the module)