Grounding question for my rear battery setup

[ggehrke at gmail.com (GGehrke)]

So you currently have a battery mounted in the back?  Do you have any pictures?
Cause I'm still not completely decided on where or how I want to
actually fasten the battery down.  I want to hide as much wiring as
possible so I think I'm going to try to build a little box for it
right behind the rear seat....

> If you want a distribution block because you are adding more accessory power wires (i.e. relayed headlights, stereo, etc.), then run a moderately sized wire from the starter up to the distribution block.  That way your starter and alternator are connected as directly as possible to the battery.
>

That's pretty much what I'm thinking - relayed lights, fan, horn, etc
with the relays and such all right up front.  I have every inch of
wire out of the car right now, so I'm able to do damn near whatever I
want with it.

> The cross-section of the sheetmetal is way more than any cable you would use - copper or not.  If you need better grounding for something, connect things to the car body better.  I wouldn't bother with a cable back to the battery.
>

That's what I figured.  Well, if you don't do it then I figure it's a
safe bet not to put another big cable in mine either.
I want to run as little actual wire as possible, and everything that I
do run from one part of the car to the other I want to be really small
gauge whenever possible.

-Grant-