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Brophy Circuit Tester for 4-Pole Flat Trailer Connector

Brophy Circuit Tester for 4-Pole Flat Trailer Connector

Item # F4CT
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Our Price: $17.24
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Circuit tester plugs into your 4-way flat trailer wiring harness and identifies lighting problems. Labeled LED lights illuminate to show which functions are working properly. Lowest Prices for the best wiring from Brophy. Brophy Circuit Tester for 4-Pole Flat Trailer Connector part number F4CT can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (101)
  • Q & A (6)
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Brophy Wiring - F4CT

  • Tools for Wiring
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  • Tow Function Tester
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Circuit tester plugs into your 4-way flat trailer wiring harness and identifies lighting problems. Labeled LED lights illuminate to show which functions are working properly.


Features:

  • Circuit tester plugs into your trailer's wiring harness to check the conductivity of all the circuits between your vehicle and your trailer
    • Quickly identifies lighting problems
  • Labeled LED lights indicate which functions are working properly
    • Tail: tail lights
    • LT: left turn signal and brakes
    • RT: right turn signal and brakes


F4CT Brophy 4-Way Flat Circuit Tester





Video of Brophy Circuit Tester for 4-Pole Flat Trailer Connector

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Brophy 4-Pole Flat Trailer Connector Circuit Tester Review

Hey there hollers. Today, we're going to be taking a look at Brophy's LED Circuit Tester. It's available in a 4-pole or 5-pole connection. Before you hit the road with your trailer, we always recommend testing things out to make sure it's working properly. One of the most important things to test out is the lighting so that others know your intentions around you while you're going down the road. Here at etrailer, we recommend testing your light at the source, which is your vehicle.

That's where this Brophy 4-Pole Flat Connector comes in, because when you plug in your trailer and you have a fault on your trailer, you're not going to necessarily know where the fault lies.With our Brophy 4-Pole tester we can eliminate the variable of our trailer and determine whether or not our vehicle side is working. We simply plug it into our 4-pole connection and then we can run through our functions. You'll want to make sure you have your left turn signal, your right turn signal, your tail lights and your brake lights. Now that you know that your vehicle's working properly, if there we're any problems with the lighting on your trailers end, you can isolate it just to your trailer, make those repairs, and then you're ready to hit the road. And that's going to complete our look at Brophy's LED Circuit Tester..


Customer Reviews

Brophy Circuit Tester for 4-Pole Flat Trailer Connector - F4CT

Average Customer Rating:  4.9 out of 5 stars   (101 Customer Reviews)

Circuit tester plugs into your 4-way flat trailer wiring harness and identifies lighting problems. Labeled LED lights illuminate to show which functions are working properly.

- F4CT
by:

Ordered hitch receiver with wiring for bike rack installation on 2019 Ford Explorer. Everything arrived in less than a week. Crawled under the car with my burly son and finished the installation in about an hour. Toughest part was getting the exhaust hangers off. Didn't have a tool for that. Online installation video was a big help. Hitch frame rubs against right side exhaust hanger, hence the four star rating instead of five. Exhaust still appears to be level and no weird noises, so not an issue. Get the little plug in light tester. It's worth it, then keep it in the glove box. Haven't purchased bike rack yet, but no concerns about the hitch.



- F4CT
by:

Once I had the harness installed. It was great to plug the tester in and check my work. I would highly recommend this tool.


Comments
Well, Ive had this little tool for a year. Now I dont use it very much, but I recently noticed my trailer lights werent working when I plugged them into my truck. The tester helped troubleshoot the problem quickly and I was back in business. So again I work recommend buying this tool and keep it in your towing vehicle. You never know when it will come in handy.
Andrew - 09/06/2021


- F4CT
by:

The circuit tester is just what you need to confirm the wiring harness you install was installed correctly the first time.



- F4CT
by:

Provides a quick way to check the tow vehicles wiring. Well worth the price.



- F4CT
by:

Perfect tool for testing the wiring. Narrowed it down to the trailer lights. Already order a kit from e-trailer.



- F4CT
by:

Excellent .. keep in the vehicle .. acc urate



- F4CT
by:

This 4-Pole circuit tester works well and reliably.



- F4CT
by:

Works great!



- F4CT
by:

Great product to be able to test your electrical install before you close it all up and try to hook up a trailer and cross you figures it was done correctly. I was able to install my own wiring harness and use this tester to make sure everything was good. Well worth the extra few dollars.



- F4CT
by:

Product was easy to install as shown in the videos. For my XTerra the connection into the wiring harness was hard to find. Recommend getting the tester to assure you have a good working connection and can prove you are generating voltage for the indicators, taillights, and brake lights.



- F4CT
by:

Super helpful for figuring out trailer issues. I wasn't getting any left turn signal and was able to figure out it was on the truck side and not the trailer side.



- F4CT
by:

Works great! Nice little tester to make sure everything is working on the vehicle side of things.



- F4CT
by:

Easy. Simple. Anybody with no electrical knowledge can use this! I would suggest using this to test the functions (as shown in the video) immediately after attaching the plug-in harness and before you put all the pieces of trim back in place. Gotta make sure it works beforehand!



- F4CT
by:

Haven't completed installation so haven't tried this as yet. Looks like good quality. Order was three items total. Arrived EIGHT days before expected via USPS. Save your money on shipping??



- F4CT
by:

Etrailer equipment is easy to install and gives a finished custom look. They provide instructions, videos, and guidance throughout the process, so making a mistake is nearly impossible. The performance and quality of the equipment is unequaled and function is flawless. I rarely bother with reviews, but they are deserving of my time, and potential customers should know they can't go wrong shopping here!



- F4CT
by:

Very helpful



- F4CT
by:

This product makes it very easy to check for correct wiring on flat four light plug. It is a small piece so I will probably put some kind of a key ring item on it so that it will be easy to find if I misplace it somewhere.



- F4CT
by:

I bought this at the same time I bought a Hopkins Plug-in Simple Wiring Harness With 4-pole Connector. It worked exactly as advertised and let me test the wiring harness installation in advance of hooking up a trailer. Both products are excellent, and the folks at etrailer exceeded my expectations in all areas, particularly the very fast response to my order.


Comments
Still working great and very helpful to make sure all is well with the wiring harness in the truck. Definitely still recommend.
Chris - 04/16/2020


- F4CT
by:

It works just like it is supposed to .



- F4CT
by:

With the $10 purchase price. Was able to test the connections right away so I'll be ready for my trailer when it arrives.



- F4CT
by:

Nice simple, useful device that allows for quick check of trailer wiring.



- F4CT
by:

Just plug it in and test all light functions. Simple to read LEDs - worked as advertised.



- F4CT
by:

Easily confirmed that my wiring installation was correct.



- F4CT
by:

The product for testing trailer wiring works great. Fast and prompt delivery. very satisfied customer.



- F4CT
by:

works well


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Ask the Experts about this Brophy Wiring

  • 4 Pole Circuit Tester Power Source
    The power source used to test the Brophy Circuit Tester for 4-Pole Flat Trailer Connector # F4CT in the referenced video I included is the Tekonsha Bench Tester # 7585. I've also included a review video for that product as well.
    view full answer...
  • Availability of Tester for 4-Pole Trailer Connector
    You bet we do! You'll need part # F4CT from CR Brophy. If you use the provided link, you can see a demonstration video.
    view full answer...
  • Sporadic Lighting Functions for Trailer Lights on a 2017 Ford Edge
    For starters, the Curt T-Connector Vehicle Wiring Harness part # C56292 is for a 2017 Ford Edge with the Sport and Titanium package. If you have the SE and SEL package on your 2017 Ford Edge then you will want to use the Curt T-Connector Vehicle Wiring Harness part # C56272. With that being said an LED trailer connector tester like part # F4CT do not always work with all trailer wiring harnesses so this could be the issue. I would ensure that the circuits are working by testing them...
    view full answer...
  • No Right Stop/Turn Signals With T-One Harness 118525 On a 2015 Nissan Frontier
    It sounds like you are using some sort of plug-in LED tester like the Brophy Circuit Tester for 4-Pole Flat Trailer Connector part # F4CT and if that is the case then these are not always accurate and Tekonsha even recommends against using these so you really need to do your testing with a incandescent circuit tester like the Draw-Tite Circuit Tester part # 40376. If you still do not get power on the right stop/turn circuit even with a standard circuit tester then be sure to give all the...
    view full answer...
  • Right Turn Signal & Running Light No Working After Replacement
    We can resolve this issue. This seems like a 12-volt continuity to the lights, or a grounding issue at the lights themselves. Since you are having trouble with two different wires, but not all lights, I would double check your 12-volts to the right turn signal/brake light which is the green wire. I would also check the brown wire for the running lights. At the connector on the back of your vehicle check for 12 volts with your vehicle lights turned on. Then with the blinkers turned on....
    view full answer...
  • Can You Test the Curt T-Connector Vehicle Wiring Harness With a Volt Meter
    Yes, you can use a volt meter to test a trailer wiring harness like the Curt T-Connector Vehicle Wiring Harness. You'd simply be looking for around 12 volts on the circuit you have activated. The other ways we recommend testing are with a more basic test light like part # PTW2993 or plug in tester like part # F4CT. The harness don't read resistance on the circuit or anything so as long as you have power to the module box and the signal is activated in the vehicle then you will see power...
    view full answer...

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Dustin K
Installed by:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Amanda M
Written by:
Amanda M
Employee Jonathan Y
Video by:
Jonathan Y

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