it'd probably be easier to just get a sealed batter box and use it without the seats, than cut up some bins -if you dont have the bins.

 

The ground in the engine bay is that black wire with a yellow stripe in the top right corner picture. The hole was for the stock battery holder, I just sanded down around the hole and then once I installed the ground I sprayed some clear coat on it to stop rusting. In the hatch it was the same deal, a threaded hole by the spare tire.

 

the ground in the engine bay is already a body ground. if you look at the wire youll see that right after the battery connection on the end it has a nice big connection to the body. i just left mine hanging.

as for the bins, ditch the whole thing. i can actually fit way more stuff back there without them. the amount of room is amazing.

 

where are you guys getting this wire? I have looked at home depot, Pep boys, and 3 different stereo places and no one has 2 or under gage wire.