Maybe its a blown fuse? Fuse is what sends power to the relay to the starter...... could be a fusible link as well. Start simple it cranks when power is direct meaning somewhere in the circuit to the starting system you have no power
1996 Mustang GT, 17x9 front and 17x10.5 cobra r replica rims, 255/40/17 front 285/40/17 rear at the moment,
o/r x-pipe flow master 40 series dump downs, cai/ram intake, 75mm c&l throttle body and plenum, pi heads and intake swap, msd wires, stock gears, untuned at the moment, no dyno numbers for now.