Powerflex Mk4 - Non
Join Date: Jul 2011
Location: United Kingdom
I looked into the ground loop issue last night and it seems the world is split on this point, some say battery is best and others say the shell is best. I managed to find some interesting points about the "true ground" of a car sometimes being the alternator rather than the battery, which supports the assertion to ground to shell, and seems quite logical, but one common theme was to makes sure that your ground back to the battery was at least as big as or bigger than your positive feed.
Given this point, I will definatly have to upgrade the original ground to shell from teh battery as it is less than 4 gauge already to support the existing cars electrical systems, so if I am adding another 100 amps of load in the boot and grounding to the shell, I need to ensure that the negative return to battery is able to cope with the extra demand.
I could go the whole hog and do a "Big 3" upgrade at the same time, but according to elearn, getting to the alternator requires me to remove the under tray, bumper, right front wheel and inner arch, so unless I can see the current cable without doing that, I think its a big job to do only to find out I cant fit 4 / 1 / 0 gauge cable into the connectors!!
anyway, thanks for the advice guys, my planned install continues to be prepped ready for a major install week!