I was wondering if someone could offer their expertise...
I've had the same setup in my car for about 4 years now with absolutely no problems.
Within the last month, I've noticed 3 problems:
1. Headunit shuts compeltely off (screen blacks out), but immediately turns intself back on. This happens about twice a day.
2. All power to the car dies (I can't start my car). However, if I lightly tap on the battery's positive terminal, power is restored. This happens about once a week.
3. Lights dim in-sync with bass notes.
My car's almost at 70K miles. Is my alternator simply at the end of its life? My battery was replaced less than a month ago, so it's still pretty good.
What can I do to resolve my problems? I've thought about investing in a 1 F capacitor. I'd really rather not shell out a couple hundred bucks for a high-output alternator if I can get around it. I've been running a 500W-RMS system through a stock, 60A alternator for about 4 years.
I would start out by checking, cleaning and tightening your connections at the battery terminals. Sounds to me like they are dirty or have a poor connection. Also did the problem start when the battery was replaced?
I agree with bberman. sounds like you connections are bad. clean them and tighten them, replace any wore out wires.
-------------
Big Dave