Hey guys,,,I put the new AGM battery in my 78 special. This is where I got to. Lets say my multi meter is reading .2 volts low. So the battery fully charged is at 12.2 v. I lost .3 volts with key on, on the switched brown wire. Thats 11.9 v. I'm only getting 11.4v. on the green coming out of the...