Starter problems EMERGENCY
 

aiight guys ive done a full s5 t2 swap into my s5 na hook the starter up....and when i connected the battery terminal wires the negative started to spark and smoke up and melted the negative battery terminal....tell me what did i do wrong

Did you put the battery terminals on backwards?
Stupid question, but eh, you never know...

:)

double check the connections on the back of your starter, you might have mixed them up

Check the positive post at the back of the starter. It has a 90 degree bend on it, make sure it is not touching the back of the starter. You have a short somewhere, something is grounding or the polarity is reversed.