Grounding amp..., trying to ground my amp Options

[6gsillyca]

I posted a while back with problems i was having with my subs, they were sounding wierd and realllllllly distorted. anyways, i got it fixed. it was a bad ground, the friend that was helping me wire up my system used a U-terminal, instead of a ring, and just screwed it in there. i went back and rewired it to a 4G stinger ring terminal (with the rubber condom on end), drilled a new hole and sanded down and screwed in.

now...problem

it started acting up again last week, so i had a look at the ground and to my amazement it looked like sh!t. the rubber around the ring terminal was all melted, the 1" foam under the carpet had a hole burnt up to the carpet, and the metal i sanded down was all black. i tried to clean the metal and re-screw it down only to find the hole was stripping...

-why is my ground get like this? do i need to get 0/1G wiring for ground?
-is it normal for the rubber thing to melt?
-how can i get the screw to stay in, without stripping, but still getting it nice and tight?

system is 1200W amp and (2) 500W rms/900W peak subs

thanks

[celicast3sgte]

thats a big enough system to have current to catch things liek carpet, then your car, on fire. the best route would be run the wire up one side of the rear panels and screw it onto a bolt where your shocks meet or something in that general area. actually now that I think of it any bolt works, just sand around the area. and if you are anal like me, sand the area, get it good and tight, then paint over it again with the connector in place. that way theres as little bare metal showing as possible.