Hey burns, during the day my voltage gauge used to go down all the way down to a little bit left of the N. Now when i turn it up during the day, it will go down but only to the left of the M, very minimal movement and only present on hard kicks. At night however lol....I have 85watt PIAA crystal ion fog lights and 35watt HID lights. That's not all though, on the inside i have an assortment of neons and blacklights and LEDS. With all this crap on at night, when my car is at idle, it sits to the left of the N anyways lol. When the amp kicks however, the voltage gauge does not change, nor do the lights dim. When moving, the gauge barely moves, although the needle sits smack dab in the center of the gauge. When turned up LOUD though at night, I will still get some slight dimming, but only on hard Dre kicks lol.