CD, thank you for your diagrams. They look like the same as the pages in the workshop manual I have (pp. 3812 and 3681). If you can tell me how to, I'll post the whole PDF file, so everyone can benefit.
andriesvdv, thank you also for the link to sijmen's excellent post. That hits the spot.
A few things out of that:
1. If I can attach/upload the manual PDF, it will give a clearer page for the sijmen's circuit diagram - it's not quite the same, with more plug info at the bottom, but the circuitry looks the same.
2. While I haven't had a chance yet to pull out the plugs in the post, I'm a little chuffed that it looks like I might have guessed right about pin 3 not being connected somehow. I'm hoping to see if that's right with my Triton.
3. sijmen mentions he couldn't get the dash fog light indicator to work. The circuit diagram looks like it's a straight connection from the C-33 connector (R(ed)-G(reen) lead on pin 2 OUT) to the light (in the Combination Meter, pin 11 IN, C-113 connector), not going through any ECU. The photos seem to show a missing terminal in the pin 2 OUT spot. There should be a V(iolet) lead from the relay to the pin 2 IN. Perhaps something similar to what sijmen did with the power could be done - run a lead from the C-33 to C-113 ?
Again, I want to thank you all for your guidance - nice to know you're not on your own out there.