it will increase resistance , amplfier will start to heat up very much , it will trip again n again
Body is the best ground , cause all NEGATIVE TERMINALS ARE attached to it ,
Visit this page , of my current setup , see the most shortest ground is very good for any amplfier , LESS GROUND DISTANCE , LESS HEATUP , Draw less current and performs good
https://www.pakwheels.com/forums/car-entertainment-electronics/106435-geforce-audio-system-update-64
scroll down the page see Amplfier`s grounding pics
and also , dual 8 AWG wire performs almost 4Awg Task
4 Awg very much expensive may be 300/m
8 Awg 70/meter ,