Troubleshooting 3rd Brake Light on Trailer that Flashes with Truck Off

Question

Question:

the 3rd brake light flashes on my 09 adams horse trailer a single flash approx. every 20 seconds when the truck is off and just sitting there they are hooked up. it is a very fast flash and only once LED Light.

asked by: Dean

0

Expert Reply:

It sounds like it's possible that the brake light wire from your 3rd brake light might be coming into contact with the electric brake wire on the trailer. The brake controller on your truck will send an intermentent, extremely small amount of power back to the trailer brakes to check for a connection, and if this wire is connected in anyway to the brake light wire, the power might be enough to activate the light. This is especially true for LED lights, as they require such little power to turn on.

I recommend tracing the wiring back from the 3rd brake light to see if there are any exposed areas that might be touching nearby wires, simply fixing as needed.

If this does not resolve the issue, please let me know and I will be happy to look into this further.

expert reply by: Chris R

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Answer 1

Hello Jean-Marc; to connect the third brake light you can use the 3rd Brake Light Logic Module #PP20-702. You will tap into the left and right brake/turn signal wires and run that up to your third brake light. The module will filter out the turn…

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Answer 2

What you would want is the part #PP20-702 which you can wire to your trailer wiring 4-way to give you a dedicated stoplight circuit for your cap. The trailer wiring has the turn signals and stoplights wired on the same circuit which is why you would…

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Answer 3

Yes, you can connect a 3rd Brake Light Logic Module #PP20-702 to a 4-Way Flat Trailer Connector #HM48110. This will filter our the turn signals from the brake lights on your trailer connector. Then you will only need to run the power and ground wire…

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Answer 4

Hey Geroge! You can use the Curt T-Connector Vehicle Wiring Harness #C59DR, but you'll also need an adapter that separates out the stop signal from your turn signals. The 3rd Brake Light Logic Module #PP20-702 is a great tool to use for this, but…

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Answer 5

You are correct that load resistors like part #P230004C will fix your issue. I reached out to my contact at Horizon Global, who owns both Bargman and Tekonsha, and he said that it sounds like you have a current path in the mechanical switch system on…

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Answer 6

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 7

A battery not holding the correct charge would not cause tail lights to flash. If you are experiencing hyperflashing on your trailer tail lights, you most likely have LED lights that are not pulling enough power from the vehicle. To remedy this I…

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Answer 8

I have added a diagram for you which details how to install the Putco LED Light Bulb Load-Resistors #DI34ZR. The LEDs will have one power wire and one ground wire; all you need to do is tap one end of the load resistor into the power wire and the…

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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

Hey Andrew! Yes, Furrion does have a Chill Cube model with a heat pump. This was actually just released for aftermarket sale. You will need a complete system to make the switch, new R32 units aren't backwards compatible with old R410A systems.…

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Troubleshooting 3rd Brake Light on Trailer that Flashes with Truck Off

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