MG Sports Cars

engine swaps and other performance upgrades, plus "factory" and Costello V8s

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Gary Rosema
(46 posts)

11/18/2013 07:26PM

Main British Car:
1978 MGB Rover 3.5L

grounding ideas
Posted by: BOOTLEG
Date: December 18, 2016 07:44AM

Installing my Advance Autowire Harness and thinking about grounding. Considering 3 bus bars, 1 in engine bay, another in cabin and another in trunk. Would appreciate ideas from others

Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5126 posts)

10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: grounding ideas
Posted by: BlownMGB-V8
Date: December 18, 2016 08:04PM

You're on the right track, it's hard to have too many grounding locations. If you run efi it gets even more interesting.

I have the following: Heavy ground cable (00) from the battery to the transmission tailshaft housing. #6 or 8 cable from the battery to the body. #6 or 8 cable (and power) from the battery into the trunk to 3/8" terminals. Separate #10 stud for ground terminations in the trunk including lights. Two #10 studs under the dashboard. At least two #10 studs under the hood plus an additional #10 stud with a ground lead that runs directly to the battery ground post for sensor grounds.

It isn't too many.


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