Every time I turn my car off

[roll2daspot]

And turn it back on my stero comes on but the sub (10 inch kicker) wont work, and my speakers dont have bass anymore either, but if I go and unscrew and wiggle the ground wire and screw it back in to the amp it works, until next time I turn the car off again then I have to do it over again. Any ideas how to fix this?

[Blackhawk]

Check the other end of the ground, where it hooks to a good (unpainted) spot? Maybe try some different wire?

[kuecker_dj09]

sounds like a bad ground. the amp goes into protection mode. i had the same problem on another car i was working on....grind the ground location (where the screw and hole are) until you see about a 2 inch diameter around the hole of metal only. this might be overkill on the amount to remove but it never hurts to try.

[gobraves00]

and make sure your ground wire less than 3 feet.take some sand paper and sand area where screw is