Not sure if this would help being I'm a electrician, but if you check resistance from the two points and have anything 0.4 or less that's a good ground.
Simple I would like get ideas as in what's the easiest way to run 4 power wires to the back, and see cargo area installs I have plenty subs so I can do just about anything, what has worked better for you? I'm not a numbers type of person. Thanks
thanks for the offer which is a good one but i had a dd m3a before and sold it locally for 440.00 dollars reason i sold it is because it didn't move my tsns like i wanted them to but they are deff some nice amps thank you this is it