Ford Repair Questions? Ask a Mechanic for Answers ASAP
That can only mean one thing. The trigger signal from the ignition switch is not arriving. This can be a problem the the plug at the ignition switch, the plug at the bulkhead connecter, the starter relay or the clutch switch. You have to start at the ignition switch and follow the power through the circuit to find where you are losing it. The wire is Red/LtBlue when it leaves the ignition stitch. When it leaves the clutch switch, it is pink and changes back to Red/LtBlue to the starter relay. After the starter relay, it comes out black to go to the starter. I assume it's at the starter relay that your jumping it.
Here's the schematic