Troubleshooting Brake Controller that Says It's Not Connected to Trailer

Question

Question:

All of the lights on my trailer work but not the trailer breaks I get a messages saying the brakes are disconnected and check trailer brakes wiring

asked by: Robert M

0

Expert Reply:

This is a fairly common problem that is almost always due to corrosion on the trailer connectors. Check both the connector on the tow vehicle and on the trailer for corrosion and/or a bent pin and fix as needed.

I attached a help article on troubleshooting brake controllers for you to check out as well.

expert reply by: Jameson C

0

Answer 1

Your 2004 Dodge should have the connector if the 4-pole connector was factory installed, but it might be a bit tricky to locate. Behind the emergency brake pedal on the firewall is a white junction box. The blue connector you are looking for is…

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Answer 2

The "Trailer Disconnected" error message on the dash with a factory brake controller is usually related to an issue with the blue brake output wire that runs from the brake controller to the 7-Way connector. The fact that the issue remains…

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Answer 3

There is definitely a short somewhere and since you disconnected the 12 volt power wire from the newly installed 7-Way the only items left that could cause this is the brake controller and its wiring. But make double sure that the white ground wire…

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Answer 4

All the brake controller needs to sense a trailer connection so that you can test it is a slight amperage draw on the output circuit. For that you can use a circuit tester like the part #PTW2993 with one pin grounded and the other on the output pin.…

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Answer 5

I would be happy to help. Since you replaced the Trailer Tow Parks Lamps Fuse 53 in your 2019 Ford F-150 and are now not getting any power to your 7-way connector, I recommend checking fuse 43 as it is for the trailer tow park lamps module. If that…

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Answer 6

You can add larger wheels and tires to a trailer as long as you have enough room for the larger size. The main clearance issues we find when putting larger tires and wheels on a trailer is from the top of the tire to the fender and from the inside…

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Answer 7

The biggest advantage and reason most people go with a larger trailer tire is the increased weight capacity that the larger tires offer. The larger diameter offers a negligible amount of better ride quality for the trailer since the larger the tire…

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Answer 8

It depends on how much clearance you currently have around your wheels. Ideally, you should have 3 inches minimum clearance between your fender and your wheels and an inch minimum between your sidewall and trailer frame/wall. As your wheel size…

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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

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 11

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 12

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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Troubleshooting Brake Controller that Says It's Not Connected to Trailer

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