Connection Shortage On Brake Controller Wiring

Question

Question:

I have a tandem axle dually trailer the brakes have very little drag on them when brakes are applied . Brakes have been adjusted up brake controler is on 10 . Wiring harness has no bad spots in it all connections appear to be fine. Is it possible the wire running inside the axle has rubbed causing it to short out. I hook up to other trailers and brakes work fine .

asked by: Darren D

0

Expert Reply:

The issue is most likely on the trailer instead of a brake controller like # C24VV for example. I know you said you adjusted the brakes but I recommend adjusting the brakes more. Take a look at our video on how we adjust trailer brake assemblies, fast-forward to the 4:35 mark of the video.

Have you tested the brake magnets already? I have an article attached that goes into detail on how to test the brake magnets if you have not done so already.

The wire running inside the axle is the power wire to activate the brakes from the brake controller. When there is usually a problem with this wire it would cause a problem with one brake not all brakes. There could be a problem with the wire that runs inside the axle tube, but if that is the braking issue, likely it would be on only one side of the trailer. The brakes that receive power before the jumper wire wouldn't be affected by the issue. If the problem is wiring, it's likely before the first brake or with the connector or ground.

expert reply by: Timothy G

0

Answer 1

To determine why you do not have any power on the blue brake output wire, I recommend starting at your brake controller. First, make sure the brake controller is on and receiving power. Most brake controllers have 4 wires, blue (brake output to…

view full answer...

Answer 2

The Fastway e2 Weight Distribution Shank #FA92-02-4213 is a great option, but if you're needing a little more drop then I recommend picking up the Shank #FA92-02-4214 instead because it offers an additional 2" of drop so you can achieve the…

view full answer...

Answer 3

I'm not sure which you consider to be the top since the Fastway shank, part #FA92-02-4213, can be flipped so I went ahead and took both measurements. Although, there's very little difference. I found that in the drop position from the top to…

view full answer...

Answer 4

If your 2020 Explorer is equipped with the factory 7-way trailer connector, it will be have the brake controller connector under the dash. The connector is located under the dash, above and to the right of where the driver's right knee would be.…

view full answer...

Answer 5

Since your 2021 Ford Explorer ST has a 560lb tongue weight rating I recommend the Fastway e2 Weight Distribution w/ 2-Point Sway Control - Trunnion - 8,000 lbs GTW, 800 lbs TW #FA92-00-0800 which works with tongue weights between 400-800lbs. The…

view full answer...

Answer 6

You're right, the mounting bracket is unique (in a good way) for the Curt TriFlex NEXT Trailer Brake Controller #C24VV. The bracket is smaller and all you do is put the included adhesive tape on the bracket and stick it wherever you like under…

view full answer...

Answer 7

L.1 is the lowest sensitivity that the Curt Tri-Flex part #C24VV can be adjusted down to. However, you can also adjust the overall brake output power with the output control. The output control thumbwheel can be adjusted from the lowest setting all…

view full answer...

Answer 8

Yes a proportional Curt controller like the part #C24VV could easily replace a #C74VV. It would be just a matter of unplugging the old controller and plugging in the new one. For suspension enhancement I would go with the Timbren kit part #TJRJK…

view full answer...

Answer 9

This is a common issue when there is corrosion built up on the brake output pin of the 7-way. What this does is cause the controller to sense a slight amperage draw which confuses it into thinking a trailer is connected. The other thing you can try…

view full answer...

Answer 10

I attached an install video that uses the 7-way adapter part #37185 and a Tekonsha brake controller but it would be the same process as any Curt brake controller like the #C24VV since the wire colors are the same.

view full answer...

Answer 11

According to the owner's manual for the Curt TriFlex Trailer Brake Controller part #C24VV, the controller will display output settings without a trailer connected. I have attached for you below an excerpt from page 5 that explains this. "The…

view full answer...

Answer 12

Curt brake controllers like the TriFlex #C24VV should show a red light when the brake pedal is pressed, even when the trailer is not connected. This is just the way that Curt designed them to show they are still receiving the signal even though they…

view full answer...