NOT BEHIND THE BATTERY!!!! The Perferct spot on all 350's 370's G35' G37 is on the Drivers side below the brake booster! There is a Knock there behind the foam on the fire wall. Here are pics
FUSE HOLDER MOUNTED TO BATTERY BRACKET.
Upgraded 4 Ga ground.
4 Ga power loomed and passing thru a 1/2" snap in grommet. Then silconed to prevent water and wind to pass thru.
Enjoy Guys!