Moin moin, I have a Fiat Stilo 1.6 16v. I have built in with a 750 watt power amplifier and now the problem: when I start the ignition, it cracks briefly (probably because of the remote cable that the power amplifier turns on when the radio goes down). But if I start the engine, it cracks, but it doesn’t disappear. It’s a constant noise in the boxes… What could I have done wrong? Hope a few experts can help. Thanks in advance stilo