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whine or whitsle

  1. Car Audio, ICE, Car Alarms, Mobile Phones, I-Drive
    Ok, after fitting my stereo in, I hav got the dreaded alternator whistle/whine coming through my speakers. I have 3 amps. The HU is connected via an ISO block, using only the red,yellow, black and remote ant wires. 1 in the front, under/behind the glovebox. The earth is one of the bolts to...