Thanks Bill,
Mostly kidding about the electrical connector puzzle...
Although, it took me a while to figure out one connector on the driver's side. The answer came when I remembered that it was for the oil pressure sender connection to the engine harness. On the passenger side, I had this important-looking connector on the harness that had no mate on the engine, then I remembered it was for the MAF sensor on the airbox (which was sitting on the parts table). And lastly, the glow plug controller module has 4 connections. I didn't do a good job documenting the wiring, so I had to dig through my photo archive to find a photo of a wired GPCM. The best photo I had only showed a part of the module, but after some head scratching it was enough. Every other electrical connector was, as Robyn said, pretty much self evident - there are so many of them...