Can a Junction Box be Used for 4-Way Flat Trailer Connector

Question

Question:

All of the junction boxes I see are for 7 pin trailers. Can a seven pin junction box be used for a 4 pin trailer?

asked by: Frank P

0

Expert Reply:

You could technically use a junction box like part # 3375601101 for a 4-Way connection, like part # HM38134, but since junction boxes are designed for 7-Way connections you'll need to find a way to plug up the larger hole since you're only going to be running 4 wires through it instead of all 7.

We do carry some different style 4-Way connectors like the Quick Fix # HMC20031 which make connecting the wiring a little quicker but I feel like this isn't as solid or secured of a connection as it would be using a junction box or butt connectors # DW05744-5.

expert reply by: Jon G

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Answer 1

I have some good news, we carry the Optronics Thinline LED Trailer Fender Light - Submersible - 2 Diodes - Red/Amber Lens #MCL61ARB. This should be the exact same light you have so it is the perfect replacement.

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Answer 2

What you have a is a 4-way Wishbone trailer connector like part #A35W42B. The two brown wires are both the running light circuits. One needs to ran to each side of the trailer. This makes the wiring a little easier instead of having to run the…

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Answer 3

There are five mounting brackets available that fit the Optronics Trailer Clearance Side Marker Light #MC65AB. These three are all black plastic. They are Optronics #A65PBPG, #A65PB and #A65B. The first two come with a single wire, the…

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Answer 4

While tinned wiring is the norm when it comes to interior wiring on boats, boat trailers see a minimal amount of water compared to the actual boats. They do use a tin coating on the pins that are the parts of a wiring harness like the Wesbar 5-Pole…

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Answer 5

Thanks for all of the info you gave on your 2022 Sport Haven AUT612D utility trailer. Since you have a 3,500 lb axle the brake assemblies part #AKEBRK-35-SA that you referenced is the correct kit to use. Then for hub/drums you'd want the…

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Answer 6

I've linked a help article that will give you the common color coding but on your trailer I wouldn't go by it. Even if they are correct you just never know so I suggest testing it. To test it cut off the 5-way connector that's on there…

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Answer 7

A 4-way trailer connector will have four functions which means it will also have four wires for the exception of wishbone harnesses. These four functions are ground, tail light, right turn, and left turn. The ground function will usually be…

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Answer 8

It really just depends on what the wires are for. Most likely you have several ground wires among the 8 as well as a couple running light circuits in there as well. You just have to run all of the wires to the correct circuits. The 4-way wiring of…

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Answer 9

There are many ways you can secure wires to a trailer. I would not recommend the use of tape as it will wear out quickly when exposed to the elements. Soldering is also not recommended because it is a more permanent method and you may need to change…

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Answer 10

You have it right so far, the 4-way connector is just as you have stated. Remember that Yellow has a L in it so that is the left side brake/turn signal and green has a R in it so that is the right side brake/turn signal. The colors for wiring a 7-way…

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Answer 11

Typically 4-way wiring consists of 18 and 16 gauge wires. For a 4-way that has all 16 gauge wire you would want the Wesbar 4-Pole Flat Connector #W787264. The part #HM38138 uses 18 gauge for all wires but the white that uses 16 gauge.

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Answer 12

The Buyers Products Trailer Wiring Junction Box #3375601101 referenced in your question measures 6.5 inches long, 3.21 inches wide, and 2.5 inches tall when the cover is installed. The mounting holes at each end are spaced apart 7.38 inches on…

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