Oh and for the earthing tip, start doing that with all crap that is connected to the negative side at the battery that ford didn't intend to be there. Look for a earthing point as close as possible to the device that needs it and take that away from the battery point.

As for the positive side of the battery, if you really need so many wires leaving from there, get a little 2nd fusebox. 1 wire going from battery to fuse box, and then you can safely distribute wires all over your car if you like, but at least it will look much better. And be easier to find the broken fuse if anything goes wrong.