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Old 09-28-2005, 10:07 PM   #1 (permalink)
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grounding problem with my enclosed car trailer???

I am having a problem with the trailer trying to ground to the ball. I know it has nothing to do with the truck since I just picked up my new f550 today and the trailer still has the same problem.

What do I need to look at? I have already tried to clean the plug out... maybe I need to clean more??? I have also bent the contact out closer together so they make better contact with the plug on the back of the truck.

I think this might be part of the problem that I have had with my brakes with my trailer since my trailer is not being grounded correctly and I am guessing that would cause my trailer brakes not to work right?

Any info you guys can give me would be greatly appreciated. I really need to fix this problem ASAP.

Thanks,
Wayne
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Old 09-28-2005, 11:08 PM   #2 (permalink)
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Re: grounding problem with my enclosed car trailer???

Find the ground wire in the trailer's wiring harness (it SHOULD be white) and trace it to where it connects to the trailer frame. I suspect you'll find your problem along this path somewhere. A trailer shouldn't ground through the ball, although this is what it will try to do if the wired ground is lost. This can cause all sorts of erratic light and brake operation!
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Old 09-28-2005, 11:17 PM   #3 (permalink)
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Re: grounding problem with my enclosed car trailer???

I will take a look right now. Be back in a few!
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Old 09-28-2005, 11:33 PM   #4 (permalink)
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Re: grounding problem with my enclosed car trailer???

I have went so far as adding a seperate ground plug alongside the trailer pigtail. 6ga or 8ga wire well grounded to the truck and trailer frame and connected with a 2-prong plug, wired through both sides of the plug. This gives dramatic gains in lighting dependability; and, will really make a difference in electric brakes.

Connecting the extra plug is no big deal and well worth it.
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Old 09-28-2005, 11:43 PM   #5 (permalink)
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Re: grounding problem with my enclosed car trailer???

That is an interesting way of fixing it.

I just went and looked and cannot find where they grounded it to the frame of the trailer. I did see the break-away box under the trailer and maybe it is grounded in there?

BTW, this is a Timeberwolf trailer.

Thanks for all the help!
Wayne
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Old 09-29-2005, 08:15 AM   #6 (permalink)
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Re: grounding problem with my enclosed car trailer???

The trailer plug should come to a junction box? My Haulmark does. From there, the ground should go to the frame somehow.

Marksrv.com has the wiring diagram for 7 pin plugs(to find correct terminal)

The separate plug would work good too, but you need to find out why Timberwolf did not put a good ground on their trailer?
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Old 09-29-2005, 09:10 AM   #7 (permalink)
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Re: grounding problem with my enclosed car trailer???

Well, come to find out Timberwolf is out of business.... So I can't call them.

I did just call the company that I bought the trailer from and he said it should be grounded somewhere to the frame... (thanks, like I didn't already know that one)

He did say it is possible that it is in the junction box but normally inbetween the axles is where they do it.

I'm going to have to take another look tonight. But if you have anyother ideas let me know.

Thanks
Wayne
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Old 09-29-2005, 10:37 AM   #8 (permalink)
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Re: grounding problem with my enclosed car trailer???

[ QUOTE ]
He did say it is possible that it is in the junction box but normally inbetween the axles is where they do it.quote]

If you can get at the wiring in the junction box, just tie into the ground circuit and ground somewhere handy that can be seen and cleaned when needed.
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Old 09-29-2005, 01:27 PM   #9 (permalink)
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Re: grounding problem with my enclosed car trailer???

[ QUOTE ]
Well, come to find out Timberwolf is out of business.... So I can't call them.

[/ QUOTE ]

Because of shotty workmanship??

A few minutes with a meter should find you the ground wire at junction box, then find a good spot on frame to attach.

Good luck [img]/ubbthreads/images/graemlins/smile.gif[/img]
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1959 B61 Mack...15 gears of twin stick, black smoke huffin' fun
1967 F100 LB....352 ci/4 spd, nice daily runner
1969 F100 SB.....428 cubic inches of dual quad, 4 speed terror.
1964 Galaxie......390 cubic inches of blown big block...with a 4 speed
1964 Galaxie Country Sedan Wagon.....428 ci and 5 speeds of wheelstanding race car
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