Quote
I'm almost ready to just push it out into the street and set it on fire.


well, well, well...
start with what you can do.
you have some diagrams to trace the wires? there is '89 factory manual around here somewhere
you have a meter to check the wires ? sears or walmarts will sell a meter with instuctions for 20 bucks. That will be your best money spent for as long as you will be fixing cars.

sounds like a bad connection. inhibitor switch...maybe you didnt re-install it correctly.That happens. Only way to know is check continuity with your meter

1989 5 door montero 3.0 auto
stock original Japanese
about 200k miles