Troubleshooting No Power On Curt 4-Way Wiring Harness

Question

Question:

Had the Curt 2 plug connector hooked up and working well, now it’s getting no power to the plug…the red fuse has been changed and car fuses are good. Has the in line controller gone bad?

asked by: Keith

0

Expert Reply:

In order to narrow this down I would start by checking the vehicle side of the connector. Check and see if there is power using a circuit tester like the # PTW2993. If you find that there is power then you can rule out anything on the vehicle side and you need to be checking the # C56332
.
If you don't have power then it is a problem with the vehicle. Since you already checked your fuses it is probably a short in the wiring. If you are unable to locate it you will probably have to take it to a local shop for repair.

If the problem is on the Curt wiring harness then use the same circuit tester to see if it has power on the vehicle side of the plug. If it does not, it is probably a short in the wire which you will need to locate and repair.

If everything checks out going into the convertor box check the wires coming out. If you don't have any output then it is safe to say it is the box and you will need a new wiring harness.

I have attached a helpful article on troubleshooting 4-way wiring for your reference.

expert reply by: Robin H

0

Phil

5/30/2024

I have the Curt wiring harness for my Mazda CX 5. I have all lights working except the marker lights. Any idea what the issue may be.

Reply

Robin H.

5/30/2024

@Phil more than likely it is the ground connection. Make sure it is secure on a clean, bare-metal surface. If it isn't the ground it could be a short in the running light circuit. After you check your ground connections you can try testing for power to narrow it down between the trailer and the vehicle. Then test until you find the short. You could also have a bad converter. If you have power running into but not out of the converter go ahead and replace it with a new one like # 118746.

Reply

Answer 1

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Answer 2

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Answer 3

On the CURT Adapter 4 Pole to 7 Pole and 4 Pole w/Test Lamps, #C57674, the test light codes are as follows: 12V = 12 volt hot lead BK = output from brake controller (if no brake controller is installed, this light will not light up) BU = reverse…

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Answer 4

There are a few troubleshooting steps to help you figure out why you have no power. I would start by making sure that there is not any corrosion or debris blocking your connection points. If they are clean or still no power after cleaning, I would…

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Answer 5

What you will want to do is test the wires going into the box of the Curt Wiring Harness part #C56496 for voltage with a circuit tester like the #PTW2993 to see if there is voltage going into the box when the taillight functions of your vehicle are…

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Answer 6

Thank you for your recent purchase of a Curt trailer wiring harness #C56165 and 4 Pole to 7 Pole and 4 Pole Adapter #C57674. LEDs take very little power to illuminate. Some wiring harnesses can pass a tiny amount of power at all times - even when the…

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Answer 7

The Replacement RV Air Conditioner Cover for Penguin and Dometic Air Conditioners - Beige item #AT3308046006 you referenced is designed to be an exact replacement for the Dometic Model 600315-321 air conditioner. To confirm it will fit you can…

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Answer 8

You will first want to check the fuses on your tow vehicle. Some vehicles could have fuses for operating the turn signals and brake lights of a towing package. You will want to check if they are installed and working properly. The next thing is to…

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Answer 9

There are no custom tow bar wiring harnesses for your 2004 Dodge Ram 1500, and while I can't answer definitively why Hopkins does not make certain products, it's probably because Jeeps are the most-towed vehicle compared to Ram trucks. If you…

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Answer 10

Yes, the Custer Wireless LED Tow Bar Light, #LIW-LDTL-7B will properly function with any towed vehicle that has a functional 7-way RV plug installed.

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Answer 11

Item #RM-035-1 is only compatible with Roadmaster Tow Bars. I recommend using Roadmaster Sterling All Terrain Item #RM-576 in place of the Curt Rambler Steel Tow Bar Item #C26FR. The Sterling all terrain has an 8000lb weight capacity, is non binding…

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Answer 12

Thank you for your February 2016 purchase of the Curt 4-pole wiring harness #C56222, which is a confirmed fit on the 2013 Kia Soul without LED-type lighting. This unit is indeed a plug-n-play harness that can only install one way, by plugging in at…

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Troubleshooting No Power On Curt 4-Way Wiring Harness

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