I realized I never did specify where I mounted my starter solenoid....
Strangely, not far from its original location.
I happened across this guy last time I was at the boneyard, too. Relevance? I read an article on the TX/XS500 forum detailing how to replace the original split regulator and rectifier with this unit. Since the original Yamaha bits are not known to fail, I hadn't actually planned to do it, but....
When I took a closer look at the rectifier, I found this. Not only is the plug melted together, but the outer layer of insulation is burnt. Not to mention the wires underneath. Plus:
Being an aftermarket bit, it's actually an improvement over the original, and they were even nice enough to spell out what wires go where, right on the unit. Classy!
Finally, everything mounted on its final, permanent location. I re-organized it a bit to make more room, but hell, it's still pretty compact. I like it!