What is Standard Wire Gauge and Breaker Amperage for 7-Way 12 Volt Accy Circuit

Question

Question:

Is there a standard for the power to the AUX +12V power lead in a 7-way trailer connection? Note: The CURT Echo Brake Controller (51180) Requires that one "Ensures the fuse for this connection is rated for 30 amps." This seems to be a minimum and I would assume that most vehicles with factory 7-way connector have at least 30 amps or this controller couldn't be used in most applications.

asked by: Mark

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Expert Reply:

Hey Mark, yeah the standard for the 12 volt accessory circuit on a trailer 7-way is normally a 40 amp breaker like part # 9510 and 10 gauge wire like part # 10-1-1

expert reply by: Jameson C

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Answer 1

On the 7 and 4 Way Installation Kit, #ETBC7, the 40 amp circuit breaker attaches to the black 12 volt power wire on the 7-Way. This provides the connector with 12 volt power. The purple wire attaches to the reverse light circuit. The 10 gauge wire…

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Answer 2

Based on your photo it looks like you have 2,700 lb axles, and we do have hubs for that size axle. However, you will need to confirm the bearings your current hub has. You will need to take apart your current hub assembly and look at the bearings…

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Answer 3

You will need to remove your hub, remove the seal and get the bearing numbers and seal numbers from what you have right now and then you will be able to pick out the correct kit. I attached a picture that shows bearings, races, and seals where you…

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Answer 4

The closest option we currently offer with these dimensions would be Grease Seal #13194, which has an 1.37" ID x 1.98" OD x 0.427". I measured this myself with a mechanical caliper to ensure the dimensions were correct.

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Answer 5

I was unable to find any reference to the numbers you listed, but based on the dimensions you gave my best guess is you need the MaxxAir Replacement Shroud for Coleman-Mach / RVP Brand RV Air Conditioners #MA8335A5261. This is for older Coleman-Mach…

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Answer 6

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 7

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 8

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 9

The #84 spindle is just a common way to identify the spindle dimensions typically used for 3,500 lb axles. So instead of listing out the parts, people can just say they have #84 spindles and it's easier to know what fits it. The CE Smith Trailer…

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Answer 10

According to Blue Ox, it'll take an experienced installer about 4 to 5 hours to complete the installation of their #BX1128 Base Plate Kit on a 2016 Jeep Grand Cherokee. The install isn't what I'd call super-difficult, but the installation…

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Answer 11

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

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Answer 12

To determine the size of the brake assemblies you need you have to measure the depth and width of the hub drum on the axle like what you see in the picture I attached. The most common size is 2-1/4 inch wide like the #T4071600-500 that you…

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What is Standard Wire Gauge and Breaker Amperage for 7-Way 12 Volt Accy Circuit

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