check all your terminals, if you crimped them, solder them, i crimped mine, and that might have been the problem to my voltage bugging out like it was, also check your big 3 or big 6, i did that wrong when i did it for the first time, and it gave me some wacky voltage after awile, make sure your terminals are tight and on batterys, make sure your connects on your fuses are good, and make sure your grounds on there good, all of these have been my voltage problems so far lol, simple yet costly mistakes