[AT] Grounding

[Doug Tallman]

Seems like Ford has some strange grounding issues. I've seen strange 
performance issues such as hiccups, surges and erratic shifts cured by 
adding ground straps. If you ground to the frame, make sure you clean 
all the other grounds and I'd probably add a ground from the battery 
ground wire at the block to the frame also. Doug T




Joe Hazewinkel wrote:
> 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
>>
>>     
>
>