318 no start after sitting

What kind of ignition?

If anything "but" Mopar ECU, just turn on the key and use a jumper to operate the starter at the starter relay, screwdriver, etc

Mopar ECU when you do this, the voltage is reduces as it still has the ballast resistor in circuit.

If you have a Mopar ECU, you either need a second person, or to rig a test gap up where you can see it through/ under the hood, or use a second person to operate the key into "start."