Actually the alt to battery is VERY useful in my car (Grand Prix) as the stock one runs around the engine about 10 miles before getting to the battery. They even sell a cable to do it.
ZZ Performance
Then they list all the benefits.The stock wire goes from the alternator to the starter with a 10' 8 gauge wire and then from there to the battery through another 8 gauge wire, then from the battery to the top of the under hood fuse box.