Voltage Shown on Tekonsha Prodigy P2 While No Trailer Connected

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Question:

Should the tekonsha p2 read anything when there is no trailer connected. The last p2 I had read voltage when accelerating .. I had plugged the brake controller in a day or two before actually connecting my trailer, and I believe it showed voltage. I just got a replacement p2, and was wondering if it is ok to plug in before connecting to the trailer? I am assuming it should read n.c. For a little while and then nothing of working correctly.. are my assumptions correct? Thank you in advance !

asked by: Scott

0

Expert Reply:

Yes, you are correct in that the Tekonsha Prodigy P2 Trailer Brake Controller part # 90885 will read "N.C" while there is no trailer connected. You can absolutely leave it plugged in while while not towing as well. If you receive a voltage indicator on the Prodigy P2 while there is no trailer connector then there is a short on the usually blue brake output wire that leads from the brake controller all the way back to the trailer connector. You would first want to check the pins inside the trailer connector for corrosion and then trace the brake output wire from the brake controller to the trailer connector while checking for breaks or replace it entirely with part # 10-1-1.

expert reply by: Conner L

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Answer 1

For a 2009 Chevy Silverado 1500 Z71 the Draw-Tite Max Frame Trailer Hitch #75521 will be a great replacement for the factory hitch. It does require the factory bumper and factory bumper brackets for the correct fit. It will have the factory…

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Answer 2

On the 2009 Chevy Silverado there is no port to plug in a brake controller. Instead GM put a tow package wire bundle under the dash. You would use the harness with the blunt cut wires that comes with the brake controller and splice into the tow…

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Answer 3

I recommend the Redarc Tow-Pro Elite Brake Controller for Tekonsha Harness item #RED63RR. This brake controller and harness will install inside your Silverado without cutting or splicing wires using the Tekonsha Plug-In Wiring Adapter item #3064-P.…

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Answer 4

For installing a brake controller in your 2017 GMC Canyon there is no plug present under the dash, but the needed wires are already run. You will connect the brake controller wiring with the vehicle wiring already present under the dash. It's up…

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Answer 5

It sounds like your Prodigy P2 trailer brake controller #90885 may not be getting the 12V operating power from the Journey's battery. With a hardwired type of installation this input power is routed from the battery positive terminal through a…

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Answer 6

If you are testing your Prodigy P3, #90195, while sitting still, then the readings you are getting are normal. The P3 is a proportional brake controller, so it will send out an amount of voltage proportionate to the braking intensity of the tow…

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Answer 7

You are correct, you should only be getting output when the brake is applied, or the override switch is activated. It sounds like the controller might be bad, but to make sure, you should probably bench test it before tossing it. Use a circuit…

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Answer 8

I bench tested a Voyager brake controller, #39510, and determined that with 12 volt power connected and the controller grounded and connected to the brake switch but NOT connected to a trailer, it will not light up even when you apply the brakes or…

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Answer 9

The NC on your Prodigy P2 #90885 means there is no trailer connection being recognized. Usually this is due to the controller not seeing enough power draw on the 5 o'clock pin of the 7-way (the brake controller output). This can be as basic as…

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Answer 10

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…

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Answer 11

It does sound like there is a short to the brake controller through the wiring or in the internal circuitry of the brake controller. Since your brake controller shows no red light this indicates a short to the brake line (blue wire). If you are using…

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Answer 12

It's possible the brake controller is bad, but you definitely want to check some other things before you purchase a replacement. The first thing to do is inspect both the truck's and the trailer's connectors to make sure the pins are…

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Voltage Shown on Tekonsha Prodigy P2 While No Trailer Connected

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