wiring help

If you have the starter and relay jumpered together, and the battery coming from the trunk hooked to EITHER one of these, then all the factory wiring should work

You MUST have a big ground jumper from the engine to the body, and the battery either grounded to the body in rear, or a separate battery NEG cable running up to transmission/ engine block

We need more details on how this is all wired??????

Are you using a disconnect?

2 or 4 terminal disconnect???

Are you using a "Ford" solenoid on the battery cable???

Details..............we can't "guess" how this is all hooked up until you tell us