Optimal Grounding??

[admobass]

When grounding a battery bank of 2, 3, or 6 batteries would you want to ground them to the frame and the front battery? for example 3 runs of 0g + and 3 0g - front battery to 3 batteries in the trunk, would i also want to ground the trunk batteries to the frame? also would multiple engine grounds help the big 3, like 2 0g runs for engine to chassis and ***** ground?

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[CaptainMaximus 10+ year member]

Should be fine with just one proper ground each as long as the wire is sufficient. I run 2 kinetik hc600's in the trunk, with both grounded to the strut. The only thing running front to back is my power wire. Works good. Hope this helps.

 

[keep_hope_alive Premium Member]

with that much, i recommend dedicated grounds to the front. i consider one run of 1/0 to be fine for chassis grounding. anything above that, run dedicated grounds. dedicated grounds will have predictable (low) resistance, chassis grounds do not have predictable resistance.

the chassis steel has much higher resistance per area per foot, and modern cars have multiple welded pieces and not one continuous run of steel.

 

[CrossoverOre 10+ year member]

if your vehicle is a body on frame design you could just ground to the frame at the rear batts and upgrade frame ground to engine batt. if unibody design run to the front.