So I tryed using every single bolt in the rear for a ground to my component amp. All produce that feedback, you know when you hit the gas and the tweeters go zzzzZZZZZZ!! My rca's are run on the complete other side of the truck from my power cable and distribution block. I tryed the bolts on the jack rack(not a good ground at all), bolt holes from where my seat was mounted, the frame bolt on the cab mount under the grommet. The frame bolt was the best but not great. Am I going to have to create a ground directly to the frame? If so, how's that gonna happen w/o drilling into the cab? Please help.