No start. Please help.

[the idiocracy]

67 inline 250. Aftermarket hi torque starter. Single purple wire to S terminal...nothing to the R terminal.

Drove to my kids school the other day, parked and when I came back out I got just a single click when trying to start. Did some fiddling there without success so i dragged it home. Good battery. Checked all fuses. Start Solenoid is what is clicking. So figured the starter Motor burned out. Ordered a new one. Just put it in.

Literally the same problem.

Anybody got any ideas on what could have happened? Is there a start relay somewhere in the purple wire circuit that I am missing? Could this be the ignition switch even though its energizing the purple wire?

Any help would be greatly appreciated. I'm stumped.