HELP! Subwoofer/amp cutout

[fc1.evan]

Hello, I have a 2020 Honda civic si and when I am at a light or parked my subwoofer and amp can be pushed and be loud and effective but when I start accelerating it cuts out and thumps and when I press the brake to slow down it cuts out. But if I’m rolling while driving and not on brake and gas they work fine. Help with advice and suggestions please and thank you because I am lost.

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[1aespinoza Premium Member]

Help with advice and suggestions please and thank you because I am lost.

As a test, disconnect the remote wire from the amp and use a jumper from the positive terminal. Drive as usual. Do not forget to remove the jumper when done testing.