Another Newbie with 0 Knowledge about RVing

So I purged the gas lines by starting one of the stove burners and then turned on the Fridge and no go. The check light just stays on and the igniter just keeps clicking, any thoughts? Also, I noticed that there are two wires disconnect in the back of the unit but I am not sure where they go or if they are needed. I have include pictures of the back, you can see a black cable, and an off white (Might have been white at some time.). I tried to take picture of the board and some of the empty slots. Also that blue wire kinda in the front, it is not connected to anything either and is actually taped off, not sure if that could cause an issue. Again any ideas would be appreciated.