No Power to Brake Controller After Install

Question

Question:

I have installed the Tekonsa P3 controller in my 2014 Escalade. The 12VDC power to the controller is not present at the connections within the truck. I have checked all of my wiring with a continuity and voltage device. my wiring connections are solid. I have checked the fuses and J case fuses and all are good. Is there some special connections to the controller that I am not aware of? Does the trailer have to be connected in order for the controller circuit to be powered?

asked by: Charles B

1

Helpful Expert Reply:

It appears that you have done a very thorough check of the issue to get your Tekonsha Prodigy P3 Trailer Brake Controller # 90195 powered on without the trailer being connected. I am happy to help you get your brake controller powered on.

I have a help article attached called Installing an Electric Brake Controller on 2007-2013 GM Full-Size Truck or 2007-Present GM SUV. Because GM quit offering the plug in type connectors on the aforementioned vehicles with a factory tow package, there are two wires under the hood that have to be connected to make the tow package functional.

If the help article did not solve your issue, we just need to re-confirm there is power getting to your brake controller by using your voltage device or a circuit tester such as # 3808 and test only the black wire on the harness, which will be the battery wire. That's how you will be able to tell if there is actually power getting through and into the Prodigy P3 # 90195.

If there is power getting through that wire but not to the P3 then the controller will need to be replaced. In terms of other troubleshooting, since you have checked all of the fuses and circuit breakers there isn't going to be much else you can do.

expert reply by: Timothy G

1

Answer 1

In regards to a 2011 Chevrolet Silverado 3500, the power ring terminal for a trailer brake controller like the Tekonsha Prodigy P3 Trailer Brake Controller part #90195 is located directly to the right of the power distribution box. It is taped to a…

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Answer 2

The wires under the hood for power to the factory 7-Way and power for a brake controller under the dash are sometimes rather hard to see. The wire for the factory 7-Way power is located under the master cylinder and is taped to the wiring harness…

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Answer 3

You will indeed need to install a 40 amp fuse in position 68 to activate stud 1 that powers the 12-volt accessory power circuit to the trailer connector. If there isn't already a wire connected to stud 1, you'll need to locate the red wire…

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Answer 4

Thank you for all of the info that you provided. From what you described I believe you have a wiring issue going on. If everything tested out just fine for the P3 #90195 after you installed it on your 2011 GMC Sierra then it leads me to believe that…

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Answer 5

I took a look at the video you are referencing and the wires of your Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional, part #90195, are connected correctly. If you still are not getting power, I would check the fuse box to…

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Answer 6

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 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

You do have the option to utilize the air brakes on your 2023 Freightliner Cascadia to control electric trailer brakes using the Hayes Air Actuated Trailer Brake Controller, part #HA100400C. However, we mostly recommend just using an electric brake…

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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

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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Answer 11

The P3 brake controller, #90195, will go into a sort of sleep mode after it detects no movement for 15 minutes. While it is on it does not draw very much power. What you can do to make sure it goes to sleep is exit the truck after turning it off,…

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Answer 12

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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