Here's my schematic:
OK, @DEcosse has been very helpful in the past answering some of my questions and I finally got around to giving this a try. My first few attempts yielded mixed results as my schematic was off. While I haven't given this one a try, I think I finally got it right. I'm using the following...
I used an immobilizer like this:
and I made one for my dad's Goldwing using one like this:
I ended up not using the GM relays like in the original post because it was a pain getting all of the spade terminals to stay on so I just found some small circuit card mount type and used a small bread board to wire it all up. It's been working great since I made it. Plus they have an "override function" too. If you lose your FOB or the battery dies, you can use the switch (I wired in a more robust momentary toggle that is hidden) and bypass it, then just re-enable it when you get the FOB or change the battery.