Re: voltage needle acting funny
i've had the same issue. had the system checked, said it was ok, so i checked all grounds, -redid those that needed it, and replaced the battery w/ a Optima YellowTop. That fixed my weird/random system drains, but my truck also has the turn signal problem. i can't even see my needle twitch anymore when i've got my 1400watt stereo blasting w/ the 2 JL Audio subs, however before the battery, my lights dimmed with the beat. check to make sure ur battery is full of water (if its that kind) or its up to spec for ur rig. ur battery might just be too old or corrosion may be setting in. check all grounds, and see what your current battery is rated for. most likely, it wont hurt to get a new, bigger battery.