Purpose of Trailer Junction Box

Question

Question:

Hello I’m looking to have a more organized setup for working on a trailer. At this moment there is a battery that everything is hooked into. Would the junction box just be a replacement for the battery ?

asked by: Richie

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Expert Reply:

The # 38656 Junction Box won't take the place of a trailer mounted battery, but it provides a protected and organized method of connecting the wires from the trailer connector pigtail to all the various lighting, power and brake circuits on the trailer. If you watch the linked video, you can see exactly how they're used.

expert reply by: Mike L

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Answer 1

When installing the MaxxFan Roof Vent #MA00A04301K that you referenced you will want to use butyl tape on the vent edges in addition to the sealant that you will apply around the unit to cover up bolt holes and any other areas that might lead to a…

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Answer 2

The batteries should indeed be grounded to the trailer frame. A battery disconnect switch like #277-000096 would install inline on the positive circuit of the battery as shown in the video I've linked for you.

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Answer 3

Yes, you can but please keep in mind that this is not the most efficient way for charging a depleted battery. However, for maintaining a charge on a battery while you are driving you can use the 7-way connection such as the Optronics 7-way, #A7WCB…

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Answer 4

To replace your Ventline V2094 trailer vent fan, use the following: - Ventline Ventadome Trailer Roof Vent w/ 12V Fan #V2094SP-30 This includes a garnish which fits roofs 1-7/8" to 3" thick, but if you have a roof with a different thickness…

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Answer 5

When installing marker lights we recommend using 18 gauge wire like #SWC97FR. This is stranded wire and is what we typically use when wiring marker lights like the #MCL32ABB for example. LED marker lights pull very low amperage so 18 gauge is likely…

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Answer 6

Trailer wiring generally uses 16 gauge wire, part #16-1-1. However, with a long trailer like yours you may want to go with a larger like 14 gauge #DW07550-1 or even 12 gauge #12-1-1. Each size is sold by the foot. You will need to have the lights at…

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Answer 7

RV roof vents are typically all 14" x 14" and require a 14-1/4" x 14-1/4" hole to install. Manufacturers have started prepping enclosed trailers with frame work to support a vent installation but I can't confirm whether or not…

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Answer 8

You are indeed right to think this way. When picking out the appropriate leaf springs for your custom built trailer you will want to choose them based on what the actual loaded weight of the trailer will be. Just make sure that the leaf springs have…

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Answer 9

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 10

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 11

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 12

Yes, it will work. You'll just need to cut the Lance 6-pin connector out and rewire it into the etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector item #e99011. Here are the individual functions of that Lance 6-pin:…

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