Hi Phil. So much good info in your post. I'm giving consideration to it all. Right now, I don't have time to discuss it all, and will be traveling tomorrow. So I'll just respond to the last bit. Just yesterday, I was perusing the Chiltons manual I just received, and the book had a section on adding aftermarket lights, which noted the unused wiring you mention. Given my book covers basically every Volvo made during that decade, I didn't assume it applies to my car, and I have yet to check. After reading that, however, I got to thinking about adding driving lights. I've never had a set of good ones, but it would end up looking basically stock, and might just solve all my issues. If the wiring's already there, so much the better! I'm certainly going to explore that path. Thanks for everything.

-Wilson