Hey US-Car fans!I would like to ask you a few questions about my 99`Tahoes: 1. Automatic 4×4 types I have to choose from: 2HI; 4HI; 4LO; Auto4WD and next to it is still neutral.What does the Neutral now mean????It has to have some function because it also has a light stripe (as for example 4HI when it’s on lights up a small strip below) 2. Tank indicator someone knows if the tank indicator lights up when the tank is all??? 3. Front lights are those on or off with you ??? with me the cables were cut for it (unfortunately) so that was it. Hope you can help me.