hey Eric I have a 1986 mazda rx7 turbo II. I am having some vehicle charging issues. I’m currently trying to figure out my voltage problem. When I put a volt meter to the battery with the key set in the OFF position- 12.5V. When i start the vehicle my volt meter is showing in upwards of 22-24.5V. Alt then gets very hot, so then I shut it off. Voltage regulator perhaps? Bad ground?