so my friend came to me with his system and said "my system bumps when im not moving but the second i start to drive it dosnt bump no more" i took a closer look at it and everything is wired fine...we got it on and it was working fine but then he put it in reverse and hit his brakes and the amp shut off.....no protect mode or anything just shut off......he did have reall really small power cable so i told to at least get some 4g ....hes got a DUAL amp 460rms and i doubt hes getting half of that but still he had PYLE 8g power wire.....thats the only thing i could think of .....anyone know what could be goin on?????
did he groung it to the tail light. One time I seen a guy ground his amp to the trunk hinge and when he shut the trunk the amp would shut off. I moved groung to bare metal on the floor and worked fine. Just a suggestion but you might want to get a volt meter and read the voltage on the power and remote wires when the car is in reverse or whenever the amp shuts off.