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Open Roads Forum  >  Travel Trailers  >  General Q&A

 > Terrible factory splices in brake wiring

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myredracer

Langley B.C.

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Posted: 06/23/19 08:59am Link  |  Quote  |  Print  |  Notify Moderator

Lynnmor wrote:

myredracer wrote:

Not sure if I can get it above the coroplast.

[image]


Tie it to the old wiring and see if you can pull it thru. If it doesn't work, then go with the exterior plan.
That's a good thought but I looked at that yesterday and the hole in the tube is way too small. I was thinking I could solder the #18 wires to the #12 and pull hard. Another method would be to run the new cable side to side above the coroplast. I'll have to see if that's do-able.

Would rather not tie-wrap the cable across on the outside of the axles but should be okay. Will attach it at the rear of the axles so it's the least susceptible to damage.


Gil, Deb & Dougal a 15 year old Springer Spaniel
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Lynnmor

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Posted: 06/23/19 04:23pm Link  |  Quote  |  Print  |  Notify Moderator

I would abandon the idea of running thru the axle tubes. You can either tie as you said, or drop down on each side instead of just one.





D.E.Bishop

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Posted: 06/23/19 05:03pm Link  |  Quote  |  Print  |  Notify Moderator

Where you mention the factory putting three wires in a std butt connector, it is not good practice and shouldn't be done. A closed end splice/connector is better and designed for that situation. I have done both without any problem but I have probably made several hundred thousand splices in my life. Maybe it's just luck but I think it is experience coupled with skill.

Some circuits should never have inappropriate splice and others it don't really matter.


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GrandpaKip

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Posted: 06/24/19 07:47am Link  |  Quote  |  Print  |  Notify Moderator

Are you going to rewire with a star pattern or keep it in series?
(If you already said, sorry, I missed it)


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JRscooby

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Posted: 06/24/19 08:21am Link  |  Quote  |  Print  |  Notify Moderator

Lynnmor wrote:

I would abandon the idea of running thru the axle tubes. You can either tie as you said, or drop down on each side instead of just one.


I have many times let light string into a tube while sucking the other end with a shop vac..

myredracer

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Posted: 06/24/19 09:00am Link  |  Quote  |  Print  |  Notify Moderator

GrandpaKip wrote:

Are you going to rewire with a star pattern or keep it in series?
(If you already said, sorry, I missed it)
Got it all in yesterday. If you'd call it a star pattern, that's what I did. I tied the cable to the propane pipe all the way down one side and then with a splice at each drum on that side, ran across to the other end of the axle. Do they do it in series sometimes? That'd create more voltage drop and the last brake.

Have to say, that was not a fun job crawling around under the trailer much of the day. Starting to feel my age. [emoticon]

If heavier gauge wire is what should be used, the holes in the axle tubes aren't large enough for more maybe more than 16 ga. with jacketed cable. The wire would have to have been installed by the axle manufacturer, in our case Al-ko.

westend

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Posted: 06/24/19 01:05pm Link  |  Quote  |  Print  |  Notify Moderator

What you've done is a series connection. You have both drums in series on one side and have two drums in series from one end of axle to the other.

A Star pattern typically has each drum having it's own pair of wires. The power can be distributed by a series wire connection to the source of power or, as I did, through a distribution block so that each brake assembly has its own pair of wires. I pulled it through heavy plastic flex-conduit and plastic boxes located against the frame. There are still two splices near the drums to power the magnets. I soldered mine and covered with heatshrink.

The 12 ga you used is definitely an improvement and you should notice better braking, immediately.


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myredracer

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Posted: 06/24/19 06:13pm Link  |  Quote  |  Print  |  Notify Moderator

westend wrote:

What you've done is a series connection. You have both drums in series on one side and have two drums in series from one end of axle to the other.

A Star pattern typically has each drum having it's own pair of wires. The power can be distributed by a series wire connection to the source of power or, as I did, through a distribution block so that each brake assembly has its own pair of wires. I pulled it through heavy plastic flex-conduit and plastic boxes located against the frame. There are still two splices near the drums to power the magnets. I soldered mine and covered with heatshrink.

The 12 ga you used is definitely an improvement and you should notice better braking, immediately.
Thanks for the clarification. What did you use for a distribution block? Does it have a watertight cover?

Huntindog

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Posted: 06/24/19 08:25pm Link  |  Quote  |  Print  |  Notify Moderator

I do not solder wire connections that are subject to vibration. That creates a section that cannot flex. Over time, it can break right next to the solder. I read somewhere that in some applications it is against code. (marine?) A proper crimp fitting and marine shrink tubing will do a fine job....


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austinjenna

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Posted: 06/25/19 04:41am Link  |  Quote  |  Print  |  Notify Moderator

Its just more proof that they are all built and assembled like junk



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