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Best option for grounding battery cable to frame

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Old 04-08-2013, 10:04 PM   #1
Crom [OP] Crom is offline
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Question Best option for grounding battery cable to frame

What is the simplest way to run a new aux battery ground cable to the frame? I'm using #2 AWG cable with copper lugs. Would a large self tapping screw work?

This is for an auxiliary battery in the bed of my truck, not the primary starting battery. Thanks in advance.
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Old 04-08-2013, 10:55 PM   #2
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I always bolt it to and existing bolt.
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Old 04-08-2013, 11:13 PM   #3
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I would drill a hole, clean both front and backsides of any paint, use a bolt with a nut and a star washer against the frame on the backside and lug against the frame on front.
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Old 04-09-2013, 12:30 AM   #4
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Quote:
Originally Posted by maxamillion2345 View Post
I would drill a hole, clean both front and backsides of any paint, use a bolt with a nut and a star washer against the frame on the backside and lug against the frame on front.
This. ^^^

I always use copper bolts, nuts and washers also. A little locktight is also good.
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Old 04-09-2013, 12:34 AM   #5
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Quote:
Originally Posted by Crom View Post
What is the simplest way to run a new aux battery ground cable to the frame? I'm using #2 AWG cable with copper lugs. Would a large self tapping screw work?

This is for an auxiliary battery in the bed of my truck, not the primary starting battery. Thanks in advance.
Sounds cool, If it is going to be hooked up to main battery, why not tie into main battery ground wire?
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Old 04-09-2013, 01:30 AM   #6
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Quote:
Originally Posted by majorhavok View Post
Sounds cool, If it is going to be hooked up to main battery, why not tie into main battery ground wire?
It's a separate battery located in the rear of the vehicle. Frame is common ground.
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Old 04-09-2013, 12:56 PM   #8
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On my rig, there is a factory ground at the rear of the truck. Look at the frame behind the drivers side rear wheel. I just hooked my battery up to it yesterday.
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Old 04-11-2013, 11:07 PM   #9
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Why would you drill a new hole when there are plenty of bolts that you can use instead of wasting time and money?
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Old 04-11-2013, 11:24 PM   #10
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Quote:
Originally Posted by 03f5sp View Post
Why would you drill a new hole when there are plenty of bolts that you can use instead of wasting time and money?
I made the thread before I inspected the frame. So it was from a theoretical point of view. As it turns out, there is a 3/8 hole on the passenger side near the wheel well that's perfect for my application.
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