Troubleshooting Trailer Using 6-Way to 7-Way Adapter Where Brakes Are Always Locked Up

Question

Question:

I hooked up my trailer with a 6 pin round connector to my sons truck. He has a 7 pin flat to the 6 pin round with a brake controller and it locks Up the brakes what are we doing Wrong? Hi girl friend has a 2012 F150 without a brake controller same 7 pin flat adapter and no problems? Thanks

asked by: Brian

0

Expert Reply:

This is a fairly common issue when there is a 6-way trailer connector involved. The problem is that there is two ways that a 6-way will get wired and the only difference between the two is that the brake output and 12 volt accessory circuit are swapped. This causes the brakes to lock up whenever the towing setup doesn't use the same wiring setup for both the vehicle and trailer.

On the trailer you will want to cut the wires on the center pin and 2:00 pin and run them to the opposite wire and your problem will be fixed.

expert reply by: Jameson C

0

click to enlarge

Answer 1

The test lights on the 7 to 4-Way Adapter #47345 will illuminate when there is a signal showing that the circuits are working (on the vehicle side). The bottom one will light up when the running lights are working. The center light will illuminate…

view full answer...

Answer 2

I checked with Yakima and they told me to have to have you clean and lubricate the bushing and then try to pull it off with a pair of pliers. Force isn’t an issue because if they can’t get the bushing off we will need to replace the trailer side…

view full answer...

Answer 3

For your 2000 GMC Sierra 1500 there is not a connection to factory wiring for the connector you mentioned. My recommendation is to use the Vehicle Wiring Harness Kit with 4 Pole Trailer Connector (Includes Install Kit) #C59496 that is confirmed to…

view full answer...

Answer 4

Since wire color codes are NOT universal, we always recommend wiring by function, rather than wire color. If you look at the Trailer Wiring FAQ article I have linked you to, you can see some diagrams showing the proper way to wire a vehicle and…

view full answer...

Answer 5

To install the Prodigy P3 Trailer Brake Controller #90195 in your 2019 Nissan Pathfinder you can find the brake controller port directly under the dash as in the accompanying photo. This will allow you to plug in the Tekonsha Plug-In Wiring Adapter…

view full answer...

Answer 6

I would be happy to help you. My recommendation is to start with SumoSprings like item #SSF-170-40-2. This will help your 2014 Fleetwood Bounder Motorhome with sway and stability. Afterwards if you still have handling concerns you can add the…

view full answer...

Answer 7

In order to haul your gooseneck trailer with a fleet of semi-tractors you will need to make your own adapter harness which will then make for a plug and play connection but they don't make anything pre-assembled for this out of the box to my…

view full answer...

Answer 8

The problem that you are experiencing is likely happening because there are 2 different ways to wire a 6-Way trailer connector. The brake output pin will wither be the center pin or it will be in the 2 oclock position, if looking at the face of the…

view full answer...

Answer 9

If your running lights are not working with the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit #RM-15267 but your turn signals are, the issue is likely the diodes. If the wires are not properly routed with the diodes, or there is some issue…

view full answer...

Answer 10

For your #HM56200 the first thing to check is to make sure everything is grounded. 1. The connector on the vehicle should have a ground wire secured tightly to a clean surface on the frame. A wire attached to the body or a surface with undercoating…

view full answer...

Answer 11

I attached a picture that shows how 6-ways are typically wired. Looking at your picture it doesn't look like the colors will match up and you will need to wire by function instead of by color. Most likely the missing circuit on your 6-way wiring…

view full answer...

Answer 12

It is possible there is an internal problem on the #HM56200. With it plugged in use a circuit tester to probe the wires of the harness that go into the converter box and then test to see if the voltage makes it out to the other side of the box. If…

view full answer...

Troubleshooting Trailer Using 6-Way to 7-Way Adapter Where Brakes Are Always Locked Up

Product Page this Question was Asked From

Continue Researching