1997 Ford Explorer No power, no clicking, no lights, no sta

I but new head gaskets on my explorer. When i try to start it was just clicking at first. Then i replace the Battery but it was sill clicking, then i replace the starter and the starter solenoid and still just clicking asked a friend and he said it could be the battery cables so i replaced them. know i am getting nothing at all no power, no clicking, no lights, and no start. can u pleases help me