Installing Brakes On A Trailer - Vehicles - Contractor Talk

Installing Brakes On A Trailer

 
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Old 02-21-2019, 12:10 PM   #1
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Installing Brakes On A Trailer


If I drill a 3/4" hole on the opposing side of the wire harness that the manufacturer drilled, (on the Square tubing) . Will it weaken the strength to much? This is all hypothetical speaking.

Ideally I would like to phish my wire through the tubing and install a grommet.


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Old 02-21-2019, 01:03 PM   #2
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Re: Installing Brakes On A Trailer


As long as the hole doesn't exceed 1/3 the depth of the joist... oh wait.

Sounds safe to me but I have no idea. Interested to see pics of the install though.

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Old 02-21-2019, 01:32 PM   #3
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Re: Installing Brakes On A Trailer


could always use conduit clamped to frame
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Old 02-21-2019, 02:25 PM   #4
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Re: Installing Brakes On A Trailer


You could run it down the other frame rail, or make the new hole a few inches away from that existing one so it is not creating a possible weak area.

Or better yet, see if there is enough room to run the new wires through that existing grommet.
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Old 02-21-2019, 02:58 PM   #5
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Re: Installing Brakes On A Trailer


Actually I just came though the existing. Thanks gentlemen.


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Old 02-21-2019, 02:59 PM   #6
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Re: Installing Brakes On A Trailer


Quote:
Originally Posted by tgeb View Post
You could run it down the other frame rail, or make the new hole a few inches away from that existing one so it is not creating a possible weak area.

Or better yet, see if there is enough room to run the new wires through that existing grommet.


Yep that's what I did.


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Old 02-21-2019, 04:02 PM   #7
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Re: Installing Brakes On A Trailer


Tom didn't you say the color codes are different in that junction box?


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Old 02-21-2019, 05:58 PM   #8
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Re: Installing Brakes On A Trailer


https://www.etrailer.com/tv-demo_tra...nd_wiring.aspx

Those guys are good source of info for anything trailer related.
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Old 02-21-2019, 06:47 PM   #9
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Re: Installing Brakes On A Trailer


Quote:
Originally Posted by TimNJ View Post
https://www.etrailer.com/tv-demo_tra...nd_wiring.aspx



Those guys are good source of info for anything trailer related.

That's where I got all my parts. But it's no help for what I needed. I figured it out so I'm good.



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Old 02-21-2019, 08:40 PM   #10
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Re: Installing Brakes On A Trailer


Quote:
Originally Posted by Californiadecks View Post
Tom didn't you say the color codes are different in that junction box?


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What I had read in the reviews was that the wires , coming from the molded plug, may not match up with the circuit that they are supposed to.

It seems that some are correct and others are not. That's why I suggested that you test the wires and not rely on the color code.



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Old 02-22-2019, 06:00 PM   #11
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Re: Installing Brakes On A Trailer


Success


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Old 02-22-2019, 06:32 PM   #12
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Re: Installing Brakes On A Trailer


Looks good Mike!

That junction box makes it easy to do a professional job that will be trouble free.

How did the brake add-on at the wheels go?
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Old 02-22-2019, 08:40 PM   #13
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Re: Installing Brakes On A Trailer


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Originally Posted by tgeb View Post
Looks good Mike!

That junction box makes it easy to do a professional job that will be trouble free.

How did the brake add-on at the wheels go?


Went great. Replaced the bearings and seals as well. I do have a question about that. How do you know when you have enough grease and can you put in to much? I did pack each bearing first in the tacky ****. Also how much trailer gain does one need and how do I know ?


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Old 02-22-2019, 08:47 PM   #14
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Re: Installing Brakes On A Trailer


It will be hard to set the gain at first.
Every new trailer I got it took a 100 or so miles for the brakes to "set".

At first you could max the gain out to get the brakes to grab and then once they set you would dial it way back.
The heavier the load the more gain it will take.
Also the truck's controller factors in. When I had my Chevy the gain was really sensitive and I could run it on 3 with a light load and lock the brakes.
My Ram I have now is opposite. Light load and I have it up on 6.
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Old 02-22-2019, 08:55 PM   #15
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Re: Installing Brakes On A Trailer


You need to do some test stops to set the gain to just before the trailer wheels lock up. Basically if your trailer tires lock up at seven then you want to back off the gain to six or five

When towing, the trailer should not push you at all

If youíre constantly changing the load in your trailer youíll have to add or subtract gain

When My dump trailer when is empty(2200 lbs) i have it set at five, and fully loaded (10k) i kick it all the way up to 10.

Even when Iím towing nearly 11,000 pounds the truck does not really take any longer to slow down than when itís lightly loaded


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Old 02-22-2019, 08:58 PM   #16
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Re: Installing Brakes On A Trailer


I agree about setting the gain, it's kind of hit and miss.

I'm not familiar with your controller but I set mine so that it will lock the wheels in loose gravel when empty, then back it off. Adjust as needed to get a smooth engagement. You don't want to have the wheels locking up.

As far as the grease, if those are "easy lube", you add grease through the fitting in the center of the axle until grease pushes out through the outside bearing.
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Old 02-22-2019, 09:19 PM   #17
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Re: Installing Brakes On A Trailer


Yep they are easy lube


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Old 02-22-2019, 09:34 PM   #18
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Re: Installing Brakes On A Trailer




Here ya go.

If you have already repacked the bearings as shown in the second video, I wouldn't worry about adding grease at this time.
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Old 02-22-2019, 10:12 PM   #19
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Re: Installing Brakes On A Trailer


As far as the setting , I drove in a big parking lot at 15-20 mph , engaged the controller and slowed down.
No skids and no prolonged slowing .
The heavier the more gain.
My dump trailer when loaded runs at 6.5 /7
Good luck,Charlie


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Old 02-22-2019, 11:46 PM   #20
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Re: Installing Brakes On A Trailer


Quote:
Originally Posted by tgeb View Post
https://www.youtube.com/watch?v=XT0RKDGgDm8

https://www.youtube.com/watch?v=GnH-h3W9XvI

Here ya go.

If you have already repacked the bearings as shown in the second video, I wouldn't worry about adding grease at this time.

That's exactly what I did. Put a big goop in my palm and forced it into the bearings. The only thing I didn't do was put grease around the seal. The green one. I hope that doesn't present a problem.



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