Need to run ground cable from front to back.. once you get up to several hundred amps of current. The chassis cant support it.. need 2 or 3 batteries.. all identical.. otherwise they drain each othe..
Why did you tell him to drill a hole in the back and ground to the frame instead of spending money on a long run of negative cable from front to rear? Ground to the frame in the front, alternator and engine block.
@RajunCajun1 my car is a unibody car. Plus this car is extremely rusty so a ground front to back would definitely be better. Thanks for your comment. You should consider subscribing
