Ford Repair: No power at all, fusible links, battery cables

Question
I have recently replace the motor in my 91 mustang and now I have no power in the car when I connected the battery. I installed a new starter and cables,alternator,battery cables. Right now I have no power to the car at all when I put the key in the ignition. Any help would be greatly appreciated.  

Answer
Did you check all fuses and fusible links? Connect battery with the right polarity?

If this vehicle did not have this problem prior to the engine change, then something is probably not connected. How about the ground cable at engine? You most likely have a starter relay on the inside fender, near the battery. There should be 2 or 3 fusible links in the connection with the positive battery cable.