Too Much Voltage?

I have to add to something 67Dart273 said. Bad Ground. One night I jumped in my car to go to the store, and I could not believe how bright my headlights were. The next day I opened my trunk, and my battery was wet.( I think I also lost the headlights.) So I replaced the VR, with one from the same place I got the 1st one. A few weeks later the battery was cooked. Got this new Duster, and really didn't drive it much, but no matter how I cleaned the battery cables, they kept getting all this caked white corrosion. Than I noticed the same voltage regulator I had problems with in the Barracuda. I think some of the chrome plating on these VR's, are not actually chrome, but rather some sort of metallic ceramic coating. In both cases, I carefully took a grinder and cleaned off the coating by the attachment bolt holes, and the mounting spot, and bought a little braided ground strap from the tractor supply, put some dielectric grease on the mounting area, assembled everything with those washers that dig into metal, and the problem ceased to be. I guess if the VR isn't grounding really good, it can do some weird things.