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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: $15.83
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In Use/Installed

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 800-298-8924 for expert service.
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  • Reviews (57)
  • Q & A (4)
  • Videos (2)
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Brophy Wiring - F4CT

  • Tools for Wiring
  • Testers
  • Brophy
  • Tow Function Tester

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 Wiring - Tools for Wiring - F4CT Review

Speaker 1: Today we're going to take a look at the Brophy circuit tester for the four-way flat tailor connectors. Now this circuit tester will plug into your trailer's wiring harness to check the conductivity of all your circuits between your vehicle and your trailer so it'll quickly identify any lighting problems. And you can see it's very small and compact, so easy to carry with you.Does have the three LED lights you can see here and they do indicate which functions are working properly. So if I just zoom in you'll be able to see right above this first light here, it's says tail, middle one will say LT for left turn and the last one says RT for right turn. And at the very bottom under the last two, it'll say brakes.So we'll show you how this works. We're going to go ahead and plug this into some 12-volt power.

Scan back just a little bit. So we have a four-way that would be like on your trailer. So we'll go ahead and plug it in. And once we get that tester plugged in, you'll be able to see when I turn on the power, your first light comes on. So that means your taillights are working properly and your grounds working because you're getting the taillight working there.

And then if we hit the left turn, you can see with the left turn working, light is flashing. And then if we do the right turn. And I can see the right turn light is working. And then when you apply your brakes you'll be able to see both lights are working. So that's showing all the four functions are working on your four-way.Go ahead and turn off our power, unhook our tester.

But that should do it for the review on the Brophy circuit tester for the four-way flat trailer connectors.


Customer Reviews

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

Average Customer Rating:  4.9 out of 5 stars   (57 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:

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! 661185



- F4CT
by:

works exactly as advertised. excellent product. 915482



- F4CT
by:

These people are on their game! 914122



- F4CT
by:

Easily confirmed that my wiring installation was correct. 913944



- F4CT
by:

Works great. I plugged it in to my truck and tested all lights. Helped me identify that the problem was in the trailer not truck. 912991



- F4CT
by:

909720



- F4CT
by: 11/02/2020

907262



- F4CT
by:

Nice simple, useful device that allows for quick check of trailer wiring. 900817



- F4CT
by:

Happy 897015



- F4CT
by:

895353



- F4CT
by:

.Nice little tool 894149



- F4CT
by:

Thanks etrailer.com, this is a handy little gadget for troubleshooting utility trailer lighting problems. Delivered on time a promised..... 882492



- 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. 876445



- 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. 874808



- F4CT
by:

Works great, and it's great to have in your toolbox! 873138



- F4CT
by:

871460



- F4CT
by:

865237



- 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. 863392



- F4CT
by:

862990



- F4CT
by:

859885



- F4CT
by:

Everything i expected very satisfied. 852065



- 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. 831146



- F4CT
by:

Easy install. After a year now, everything is great. Does the job 816528



- 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! 803171



- F4CT
by:

Original installation was a piece of cake. One year later, everything is working great with no issues thus far. I'd highly recommend this product. 790856


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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...
  • 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...

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Info for this part was:

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

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