1/2 a volt is actaully pretty awesome. I'm about to pull my entire dash out to do some maintenance/upgrades to the HVAC system, install a pretty indepth car alarm with remote start, and so some mods to the wiring.....
I've got a mental image for a "whole car hotwire kit" that will give full voltage to EVERYTHING, take the load off the ign switch, and make the car more electrically stable. With any luck I can write a ''how to'' that can be installed cleanly without having to take off more than the underdash panel.
I really have a feeling that getting the entire car on the same voltage level will help. I know or a fact it can't hurt.
That sounds like a great project--I will look forward to seeing your "how to" on that, Earl.