dash wiring

Can anyone help me understand what is the purpose of this yellow box that was mounted next to the steering column? And why there would be so many wire splicers?

I recently rewired my 2003 Jeep TJ with a used wiring harness from another Jeep TJ of the same year. The new harness was a factory harness, although it had an aftermarket sentry key module which was hardwired into the harness. I just figured as long as I unplugged the module it wouldn't cause me...