Hey guys, I am new to the Jeep world as of two days ago, pictures to come soon. I picked one that came pretty loaded and have no idea on how some of this stuff works. Can someone please let me know what and how an ARB compressor works, a button for locking front axle another for the rear, I just don't want to do anything stupid before i start pressing buttons. Should compressor button be on all the time? Thanks for your help.