ABS and VSA lights are on

I bought my 07 si about 6 months ago me and my buddies put in a new sub and we had to open up the dash and take out the back seat to wire it. After the sub was put in and all wired up we turned the car on to fine the ABS and VSA lights were on. I drove it for a bit thinking they would just go off then my buddy looked at it with a scanner and found it was fully disconected we opened up the dash again and made sure all the wires were correct we tryed to clear the codes and checked all the fuses. Im not sure what happened but im hopping someone can give me some advice on this just if i need to replace something get it rewired or what.