When he was trying to pull battery cable off the board (top left corner of step 14 picture, white/brown connector) my son broke 2 pins that are still loose. There are 8 pins in two rows and 2 right ones :::: <-- are the ones hanging.Seems to me 4 left are Positive and 4 are right negative battery connectors but don't have big enough magnifier to find out without schematics. Could someone guide me where to either find schematics or bigger picture of pins alone.