[AT] Grounding

Easley, Greg EasleyG at health.missouri.edu
Thu Oct 23 07:42:47 PDT 2014


A pair of 12v batteries wired in parallel?  My Dodge has the same setup.  It doesn't matter which one you use for the ground connection.
What's important is bypassing the possibilities of connections corroding underneath the truck.

-----Original Message-----
From: at-bounces at lists.antique-tractor.com [mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Joe Hazewinkel
Sent: Thursday, October 23, 2014 9:07 AM
To: Antique tractor email discussion group
Subject: Re: [AT] Grounding

Greg, mine does have the seven pin connector.  My truck is a diesel with two batteries, do you think it matters which battery I hook the ground to?

I figured Ford would ground to the battery, but no such luck. I'm going to have to look up a wiring diagram on-line and see if I can find anything.

Enjoy, Joe

Sent via mobile device

On Oct 23, 2014, at 9:54 AM, Easley, Greg <EasleyG at health.missouri.edu> wrote:

#10 stranded copper wire all the way back to the truck battery is a good solution.
Replacing the 6-pin round connectors with the 7-pin RV type helps too.


-----Original Message-----
From: at-bounces at lists.antique-tractor.com [mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Henry Miller
Sent: Wednesday, October 22, 2014 9:46 PM
To: Antique tractor email discussion group; jahaze at aol.com
Subject: Re: [AT] Grounding

It shouldn't harm anything, and might fix some other unexplained problem as well. 

Trailers brakes take a lot of power, if you tested with just a voltmeter, then I'd worry that the power line might not be able to supply full voltage under load.

> On October 22, 2014 7:57:37 PM CDT, jahaze at aol.com wrote:
> To follow up on my trailer brake problem, I have been able to 
> determine that I have plenty of voltage to the brake prong on the plug 
> when I ground it to the truck, and a drop in voltage when I ground it 
> to the ground prong.  My guess is that I have a weak ground connection 
> on the truck.
> 
> I tried to chase the ground wire through the truck wiring harness, but 
> never did figure out where it was connected. What I'm thinking about 
> doing is putting a jumper from the plug ground wire to the frame in 
> the back of the truck to make a better connection.
> 
> Is there any reason this won't work? Or does the ground wire have to 
> be connected to another part of the truck?
> 
> Enjoy, Joe
> 
> Sent from my iPad
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Sent from my Android device with K-9 Mail. Please excuse my brevity.
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