Review on 🔊 Enhance Audio Quality with Universal 10 Amp Inline Power Noise Suppressor Filter Eliminator Isolator by Robert Cooper

After I installed the product, the alternator noise was half gone. I can still hear it, but it's much quieter. First I tried connecting the red battery to the red filter, the black to ground, and the blue filter to the red stereo. The noise didn't get any better. I then tried filtering red to automotive yellow, black to black, and finally blue to stereo yellow. That was the configuration that worked for me. The generator noise is half gone. Maybe it would be half as much if I put a second one in. Not sure what configuration I should have done but it worked to make yellow instead of red. This is a condenser filter and maybe it would work better if I had a different filter.