well this weekend i ended up installing my system. everything when well but now i have this whine noise that coming out of the speakers. i get louder when i turn on the light and when i hit the brakes. i don't know if i grounded the amps wrong? need help

this is how the system is setup up like. I nap the hi to low from the front two door speaker. run the RCA to the eq near my seat and then to the 3 channel cross over to the amps. I'm using for voice is jl 300/4 and i grounded it to the seat belt bolt under the bottom part of the seat. I'm also running a 1/0 gauge wire from the main battery to the cap(for now I'm install a second battery soon)on the other side of the trunk.

 

never mind I found the problem!!!