car wont start!

[91etalon]

so i finally got the car running yesterday and i pull in to wash it and everything is fine. Once im done and go to start it i hear sparks from the back (battery is relocated to the trunk). I cant find what is wrong with the car now, it wont start. The car still gets power but once i turn the key to ON, the power dies and it wont even turn over. Im thinking its a fuse but i cant find which one is blown and its driving me crazy! Id appreciate any ideas you guys got.

 

[JayRolla]

Follow all your wires and make sure you hooked your batter up right. Ive heard of this problem and it sounds like you melted a wire somewhere and its grounding out.

 

[szewczyd]

Are you sure you did not possibly fry the ecu?

 

[RallyTalon93]

How could someone fry the ECU... Becuase i too have the same problem..Except the battery isnt relocated