So I gave in and took it to Bob Haverkamp at All Audio in San Rafael. He was listed on this forum (
https://forum.ih8mud.com/threads/cruiser-mechanics-listed-by-state.349535/) for car electronic and audio, and his yelp reviews were stellar.
First let me say Bob is awesome, coming in on his day off to help me out, he methodically dug through the system with am amazing combination of expertise and patience. It took us about 3 hours to figure everything out, and the whole time he explained everything to me, including me in the process. His rate is extremely reasonable, so reasonable I threw in a 50% tip because he deserved it.
So, the issues:
The hi beams blowing a fuse was pretty easy, he seemed to know what was causing it almost immediately. The insulation to the hi beam indicator light had rotted away and the positive lead had fallen out the back making contact with the dash, and causing a short. He has that fixed in about 30 minutes.
The blinkers provided more problematic to track down. We did a quick visual inspection of the wiring, then he pulled out the wiring diagram to start tracking stuff. Because both the blinkers and hazards, we eventually landed on the hazard switch (after checking the blinker box, and the indicator switch on the column, and a bunch of other stuff), problem ended up being an bad connection between the harness and the switch, one of the sockets on the plug had flattened out and was not providing power.
So now everything is working. I couldnt be happier, and while I hate admitting defeat, I am really glad I met Bob and had him fix it, I dont know that I would have ever found the hazard switch problem.