I'll check voltage at the starter tomorrow. Started looking through the wiring diagrams and there is no starter relay on an AT Montero. It is however in the diagram for a manual tranny. Looks like the circuit goes through the ignition switch, to the park/neutral switch and then to the solenoid and that's the end of the circuit. Has a couple of branch offs from there but they do not affect the starting circuit itself.

I've had it in my head to ditch the aftermarket alarm on this thing, since at first glance it looked like a hack job. That is a MAJOR understatement after looking further into it. I have never seen such a poorly installed alarm. EVER. And I've seen a lot of them. Wire insulation was basically stripped from the ignition switch wiring and the alarm wires stuck in between the bare wire, and then taped. With a few relays and fuses and taps to add to the mess. Scrapped the whole deal and repaired the ignition switch harness. Still wont' start, but I can hear the starter winding down after I stop cranking, which I don't recall hearing before. So now at least I can rule out the alarm, and have a clean circuit to start working with.