Troubleshooting Trailer Lights Wiring Harness For a 2019 Prius LE Front Wheel Drive

Question

Question:

I have a 2019 Toyota Prius LE. When using the etrailer web site to the proper wiring harness for trailer lights I needed to pick the style of the vehicle. The two choices were: AWDe or FWD. Does FWD stand for Front Wheel Drive or Four Wheel Drive? My car is Front Wheel Drive. The FWD ion indicates that I should order a C56353 which I did. It was delievered on July 31. I installed it but the trailers brake lights and running lights do not work. The turn signals do work. When I was reading the powered Converter Lead Instruction Sheet I noticed a paragraph near the bottom of the sheet which states: If using the converter as a powered module for a two wire system, the red brake wire must be grounded.inch Does this mean I need to connect a separate ground wire to the red brake wire or is the brake wire already grounded through the module? If I need to add a ground wire do I connect it directly to the red brake wire? Any advice you can provide would be greatly appreciated.

asked by: Allan F

0

Expert Reply:

FWD will stand for front wheel drive.

The Curt T-Connector Vehicle Wiring Harness # C56353 is the correct harness for your 2019 Prius LE front wheel drive. It sounds like the connector that mounts behind your bumper is not connected properly. This connecter is where the powered converter gets its signal for the brake lights and running lights. This is step 12 of the instructions that I have linked below for you to reference.

You will not need to connect the red wire to ground as you will have a 3 wire system on your Prius.

expert reply by: Bud M

0

Answer 1

For your 2022 Toyota Prius, I recommend the Curt Hitch - 1-1/4" #C11473. Not only will this hitch provide you with 2,000 pounds of gross towing weight, it also comes with a high-quality gloss outer coat over the base powder coat which gives…

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Answer 2

The Curt T-Connector #C56353 for your 2019 Toyota Prius has the stop lights on the red wire which shares connectors with the brown (running/trail light) wire. If you jump to the 5:45 mark in the attached install video and/or jump to step 11 in the…

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Answer 3

For wiring to add a brake controller to your tear trailer when towing with your 2014 Honda Odyssey, the vehicle must first have a 4-way wiring harness. If you need a 4-way, I recommend the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer…

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Answer 4

We can absolutely help you troubleshoot this. When installing a wiring harness like the Curt #C56406 on your 2020 Jeep Cherokee, this most commonly occurs when one of three things happens; either the plug is not seating correctly with the harness,…

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Answer 5

Yes, you can use the Roadmaster Extension Loop #RM-300150-00 to connect to the Thule License Plate Holder #TH35JV wiring. This will leave you 2 exposed male terminals which will have power and could short out when using the turn signals and brake…

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Answer 6

The best solution we have is to use the Thule License Plate Holder #TH35JV for the license plate part of your problem and then adding magnetic towing lights like the Wireless Hopkins #C6304 (you need 8 AA batteries #DU58QR) or Optronics #TL21RK so…

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Answer 7

Both the Curt #C11473 and the Draw Tite part #24966 that fit your 2022 Toyota Prius are really great options for trailer hitches. The edge would go to the Curt though as we have found their quality control tends to be a little bit tighter and the…

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Answer 8

I spoke to EcoHitch who confirmed that the Hidden Trailer Hitch Receiver #EH53VR will work on your 2022 Toyota Prius AWD-e. This will give you a 2" receiver which is better as more accessories will work with that size receiver. Curt has not been…

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Answer 9

The Curt #C11473 fits the 2022 Toyota Prius, according to Curt so it'll work great for you. The hitch would work well as an attachment point for a hitch mounted accessory like a bike rack or cargo carrying tray. If you'll be using the hitch…

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Answer 10

When you test the 4-Way on the Curt T-Connector Wiring Harness, part #56016, at the rear of your vehicle, it should show now power on all 3 pins with the lights off. If you have the vehicle head lights on, you should have around 12 volts at the brown…

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Answer 11

Yes, it is possible that the converter box of your trailer wiring kit is at fault and the reason your trailer wiring stopped working. You can test it pretty easily with a circuit tester like part #PTW2993 by testing for voltage on the input side of…

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Answer 12

I do have a recommendation as Curt does not offer the replacement components that you are looking for on your Curt T-Connector Vehicle Wiring Harness #C56331 for your 2016 Dodge Grand Caravan. I have noticed is not everyone secures the black…

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Troubleshooting Trailer Lights Wiring Harness For a 2019 Prius LE Front Wheel Drive

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