Test Brake Controls

Since the trailer was off of the ground it would not take much voltage to stop the wheels from spinning so they may be getting power but they may not be getting enough power due to a short or wiring issue. But 9 times out of 10 weak trailer brakes…

According to our records, the cold brake switch wire on a 2004 Dodge Ram 2500 should be a white/tan wire. Wire color is not always universal, so if you do not find a white/tan wire, you can use a wire tester like part #PTW2993 to determine wire…

On my 2004 Dodge Ram (which would be the same as your 2003) the factory trailer connector plug split off from a larger wiring harness on the inboard side of the drivers side frame rail near the rear bumper. There should be a rectangular connector…

I would check the magnets for wear before going on to test them with a meter. If the magnets show abnormal wear or if you can see the windings beginning to show through the friction surface of the magnet then they will need to be replaced. To further…

Your controller has an adjustment to set the amount of power that is initially supplied to the brakes on the trailer. If you have tried adjusting the setting and still have the trailer brakes locking up, then you need to bench test the brake…

The break away system on a trailer would typically have its own battery, like that shown with part #20400. The reason that pulling your break away switch does not actuate your brakes is that it is not wired correctly. The break away switch should be…

If your breakaway battery is dead, your brakes should operate while connected to your vehicle's 7-way trailer connector. If your brakes are not operating, then it sounds like you might have a short in the brake wiring of the trailer. Battery…

We've heard of this from Ram owners as well, so the Curt 7-Way to RV Socket LED Circuit Tester - Vehicle End #C66NR won't be detected as a trailer being connected on your Ford. Our customers have success with the Pollak 7-Way to RV Socket LED…

Sounds like your brake controller will apply your trailer brakes if you apply the manual override lever but not when you press the brake pedal. This is a fairly common problem and the solution is the red wire of the brake controller. Make sure it is…

From your testing and description of the problem it sounds as if your OEM brake controller is not functioning properly. Many of the 2005 and 2006 Ford OEM brake controllers had internal issues that cause owners to replace them with an aftermarket…

The stock brake controller on your 2015 Ram 3500 is not giving you the proper voltage for safe braking. When you test the 7-way at the 5 o'clock pin when engaging your manual override, you should be getting 12 volts. If you are testing without…

What is the year, make, and model of the vehicle? The red brake controller wire should only be getting power when you step on the brake pedal. If you are not getting any power on that wire with the brake pedal depressed then you may have it attached…