I've got an old receiver I have modified into a carPC, I currently am powering this system by a power inverter (might I add is a complete waste of energy). I threw this system in my 02 camry, jack everything in, works fine. the problem is when the car is on, I have alternator whine through the speakers. I have made previous generations of carPC's in my other vehicles and I have always stressed to myself "ground everything" (pretty much), and the typical way I solved alternator whine was to ground the audio signal before it goes to my alpine deck to the frame of the car, usually that works. Except in the camry, when I ground the system, I get MORE noise and TONS of noise lines on the TVIEW monitor. I have also thrown this same system in my 91 full size blazer, no issues with that.
If I just break down and get a DC-DC PSU would that solve the noise issue?
Is the electrical system in the camry so different then the blazer where I would need a ground loop isolator?
does anyone have any ideas?