Battery location arguments - 12 volt conversion
Reasons not to move battery form original position
It's original
It's original
Will clutter up the firewall
Have to find/make a battery holder.
Reasons to move
A limited number of 12V batteries will fit in original holder, just bought one, I think type 25 and 35 and maybe 1 more.
Don't have to roll up rug every time you check the water (unless you use an Optima or similar).
Unless it is a show truck, they should all be wires - battery ground wire to bell housing, straps from bell housing to frame and cab.