What is Function of Red Wire on Hopkins Trailer Wiring Kit 40215

Question

Question:

Whats he red wire do, its coming out of the vehicle adapter before The converter?

asked by: Mike J

0

Expert Reply:

The red wire on the input side of the converter box of the Hopkins wiring kit part # 40215 is the stoplight circuit. The converter box takes the wiring setup on your vehicle which has the stoplights and turn signals on different wires and combines them to be on the same circuit which is why the red wire does not come out the other side of the box.

expert reply by: Jameson C

0

Answer 1

In regards to the Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug part #41157: Purple - Reverse/Backup Light (Center Pin) Blue - Brake Controller Output (5 O'Clock Pin) White - Ground (7 O'Clock Pin) Red - +12…

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Answer 2

It sounds like your truck will use a 7-way harness like Hopkins #40167 which uses connectors like what you describe. Please refer to the linked photo that shows those connectors. This includes a 7-way socket that plugs into the included round U.S.…

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Answer 3

The black wire on the Hopkins 7-Way Molded Trailer Wire Connector - 11' Long #HM20048 you were looking at is for the 12v power circuit that typically gets used to trickle charge an on-board battery, or for powering an electric trailer jack. If…

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Answer 4

I strongly recommend running the 12 volt power wire from the Curt Wiring Harness, #C59496, directly to the vehicle battery. The 12 volt accessory circuit was not designed to support the additional load of a trailer wiring harness. A wiring harness…

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Answer 5

When installing the trailer wiring harness part #119178KIT that you have the red wire gets ran to the stoplight circuit. If your vehicle has taillights that only come on with the brakes (and not with the blinkers), that is the circuit this should run…

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Answer 6

A trailer with electric brakes will require a brake controller and a 7-Way connector on your vehicle. A 4-Way will only supply the lighting on a trailer. The 7-Way is needed to power the brake controller along with the lighting. There is no straight…

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Answer 7

First, thank you for your purchases and for the opportunity to help. Auto makers do sometimes change wire colors during a production run and that is why we include the tester in the #ETBC7 brake controller install kit. You did the right thing by…

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Answer 8

The yellow wire of the 7-way harness part #H20044 that you referenced goes to the center pin of the 7-way which is an aux circuit that is typically used for reverse lights if present on the trailer. Normally the red wire on a 7-way (RV standard…

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Answer 9

The red wire on a brake controller signals the controller that you are stepping on the brake pedal, so it has to be connected. It does not operate the brake lights on the trailer. It attaches to the cold side of the brake switch. The brake switch is…

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Answer 10

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 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

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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What is Function of Red Wire on Hopkins Trailer Wiring Kit 40215

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