HU only works Intermittently

Hey, so I recently swapped my Alpine CDE-136BT head unit from one car to another and encountered a very bizarre issues. The head unit works perfectly in the old car(2001 Dodge Neon), but when I hooked everything up in the new ride (99 Jeep Grand Cherokee) the head unit will only play sound through the radio input. However, if I try using BT, USB, or Auxiliary it will not play any audio through the speakers. Any ideas on what might be causing this?

TLDR - HU works perfectly fine in old car, but only work on radio input in new car.

EDIT: Solution after very extensive google search was that I had to connect both of the blue wires from HU (blue and blue/white) to the remote turn on.