Which Pin On 7-Way Normally Carries Brake Output Circuit

Question

Question:

I am pulling a stageline 100 portable stage trailer, tow vehicle is an older Freightliner. Gooseneck trailer has 7-pin round post connector, tow vehicle has same connector. Tow vehicle is equiped with modulite power connverter, and Voyger brake controller. Blue wire or center pin on the tow vehicle has been converted from always hotinch auxiliary circuit to brake controller outputinch blue wire. Do you have a wiring diagram for this set up? The trailer 7-pin connector is wired to same pinout as tow-vehicle.

asked by: Terry S

0

Expert Reply:

I attached a picture to this page that shows the standard pin out of a 7-way. Normally the brake circuit of the 7-way is carried on the 5:00 pin.

expert reply by: Jameson C

0

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Answer 1

The wires to install the Prodigy P3 #90195 are indeed already run and under your dash. I have added a link to an installation video showing exactly how to install this brake controller in a 2011 GMC Sierra like yours. On the Prodigy the blue wire is…

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Answer 2

Yes, we do have a generic brake controller wiring diagram on our Brake Controller Information page. I have added a link to it below. The bundle of wires you are looking for should contain the following: white with red stripe, blue with white stripe,…

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Answer 3

Yes, one of the few consistencies in trailer-related wiring is that all trailer brake controllers such as the Prodigy P3 #90195 use the same 4 wire colors for specific functions. The controller's Black wire connects to the vehicle battery via a…

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Answer 4

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 5

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 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

If you just need a 4-pin to 7-pin trailer wiring adapter, then you can use part #C57672. This will plug into the 4-pin trailer connector on your brother's vehicle and give him the 7-pin socket for the trailer. Keep in mind, this will only give…

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Answer 8

The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th…

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Answer 9

You do have the option to utilize the air brakes on your 2023 Freightliner Cascadia to control electric trailer brakes using the Hayes Air Actuated Trailer Brake Controller, part #HA100400C. However, we mostly recommend just using an electric brake…

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Answer 10

If you have a vehicle specific wiring harness for a brake controller then that would indicate that you have a factory tow package and subsequently would already have a 7-way at the back of your vehicle. The universal 7-way connector #ETBC7 is meant…

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Answer 11

The trailer brakes work on a separate circuit than the lights. You have a couple of options to control the electric brakes on the trailer. One option is to use an air over electric brake control, #HA100400C. This unit connects to the air brakes on…

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Answer 12

Lance does have a proprietary plug, but many customers see a standard 6-way or 7-way round and notice it doesn't fit their factory 7-way as well. I've attached an article to help if you have one of the 7-way or 6-way round connectors which we…

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