Troubleshooting No Power To Trailer Brakes with Redarc Tow-Pro Brake Controller

Question

Question:

Oiye oiye..I just lost trailer brakes on caravan. I have a redarc dial in dash. No lights on dial now when sitting idle. If i hold it in it slowly glows green on and off. So it has power to it. Any ideas? Fuse for trailer is fine under hood. Usually glows yellowish colour while driving then gets red or orange when I press brakes. I know i can recallibrate but button..nreds to be driven as part of process too..Online chat reckons its not recognising a trailer plugged in..might have to check plug wires..but I just did that yesterday cause fridge wont run on 12v either. I have checked multimeter and I have 12v power behind fridge. Any ideas? Cheers

asked by: Shem B

0

Expert Reply:

The best way to test your Redarc Tow-Pro Elite # RED44FR or Liberty # RED52VR brake controller is by cutting the blue wire coming out of it about 6" away from the controller and using a circuit tester to make sure power is coming out of the controller and going towards your trailer brakes. Try using your manual override by pushing the button to send power on that blue wire and you can verify this function.

If you do get power coming out of the controller then you have an issue with the wiring somewhere between where you cut the blue wire and your brakes, but if you don't get power coming out of that blue wire then there is something going on with the controller and you might need to take advantage of the 2-Year Warranty (if that still applies).

When checking your wiring you want to look for any places where the wires are cut, pinched, or damaged and replace as necessary. Be sure to check all of your connections as well, including the connections inside your trailer and tow vehicle 7-Way connectors.

expert reply by: Jon G

0

Martyj

4/28/2024

Hi John, you say test the blue wire for power how much power should I get with my circuit test 12/13 volts or less, I am getting 1.98 volts Regards Marty

Reply

Jon G.

4/29/2024

@Martyj Are you using the manual override and increasing the output of the controller? You should be getting 12V/13V with the manual override.

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Answer 1

Since the Redarc Tow-Pro Elite Trailer Brake Controller - 1 to 3 Axles - Proportional #RED44FR you have does not have any lights you are correct that it is not recognizing that a trailer is connected. What you will need to do is inspect the 7-way…

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Answer 2

When it comes to the wiring for the Dexter Electric Over Hydraulic Brake Actuator, #K71-651: 1. The black wire will connect to the 12V circuit coming from the vehicle's trailer wiring that is always hot. 2. White is the ground. 3. The yellow wire…

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Answer 3

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 4

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 5

There is only one difference between the Curt Trailer Hitch Receiver #C13176 and etrailer Trailer Hitch Receiver #e98909 that fit your 2020 Chevrolet Colorado, which is the finish. The Curt trailer hitch has a glossy black finish while the etrailer…

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Answer 6

Yes, we do. To add a hitch to your 2024 Toyota Grand Highlander, I recommend the Curt Trailer Hitch item #C26VV. This hitch is custom fit and bolts to your Toyota with included hardware. This is a class III hitch with a 2" receiver. It has a…

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Answer 7

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 8

The Redarc Tow-Pro Liberty #RED24FR is the way to go over the Elite #RED44FR as you get the nicer functions of the Elite at a lower price. The Elite has the ability to be the more preferred proportional style of controller as well as a time-delayed…

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Answer 9

Hey Antoine, so the two kits you mentioned are actually really similar and honestly I would go with the part #ETBC7 if I were you. The #ETBC7L is basically the same thing minus a couple wires and breakers so you may as well get the kit that has…

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Answer 10

That's a very good question, we tend to be extra cautious and say to use 10 gauge wire because that would be more than enough. When you get into longer trailers that will end up using a lot of wire the heavier gauge wire becomes more necessary.…

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Answer 11

If you have a vehicle specific wiring harness for a brake controller then that would indicate that you have a factory tow package and subsequently would already have a 7-way at the back of your vehicle. The universal 7-way connector #ETBC7 is meant…

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Answer 12

If you just need a 4-pin to 7-pin trailer wiring adapter, then you can use part #C57672. This will plug into the 4-pin trailer connector on your brother's vehicle and give him the 7-pin socket for the trailer. Keep in mind, this will only give…

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Troubleshooting No Power To Trailer Brakes with Redarc Tow-Pro Brake Controller

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