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