This circuit tester plugs into the 7-way connector on your RV. LED lights indicate which functions (brake, turn, tail, stop, reverse and 12V) are properly working.
Features:
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today we're going to show you the Pollak 7-way RV socket LED tester. Part number PK12741. This tester is designed to work with seven pole connectors, works on your RV or in this case we have a truck with a seven pole built in from the factory. It has LED indicators for all the functions. We'll go ahead and cover the markings. LT for left turn, TM for marker lights or trailer marker lights, RT for right turn, [email protected] volt for our constant supply out for our trailer, BK for brake controller output if your truck or RV has it, and BU for our back-up light. Now we have six functions here, number seven would actually be our ground.
We'll take a look a the top here, you can see has all brass contacts just like any other seven pole connector. So this is very handy to keep with your trailer. If you happen to use your trailer on different vehicles, you can verify if the truck that's pulling it is working correctly or not. Let's go ahead and try it out on our truck. It plugs in just like any other seven pole connector. Line up this key with the groove.
On the connector just push it in firmly and you can let the lid rest, but I'm going to hold it up and you can see right off the bat it's showing us that we have a constant 12 volt supply from the truck. Next we'll go ahead and go through the functions and we'll make sure everything works. Okay, first off we'll go ahead and take a look at the left turn signal. Okay, that works. Now we'll turn on the running lights or the headlights. Okay, we have a good circuit there.
Let's turn that off and now we'll try the right turn signal. Okay, good function there. Of course we have our 12 volt power supply. Now our vehicle does not have a brake controller, but it would light up the same way as the other two. We've put the vehicle in reverse.
Okay, we see we got reverse light. And also if we had the brake light we'd have the brake pedal pushed on. WE can also see how the right turn and left turn come on at the same time. All right, and with that that'll finish it for the Pollak Seven-Way RV Socket LED circuit tester, part number PK12741.
Average Customer Rating: 4.8 out of 5 stars (99 Customer Reviews)
This circuit tester plugs into the 7-way connector on your RV. LED lights indicate which functions (brake, turn, tail, stop, reverse and 12V) are properly working.
There have been several times this tool has helped isolate problems with trailer wiring by insuong tow connector AOK. 5th wheel, horse trailer, flatbed, and touhauler all had either a bad connector, a bad wire, corrosion issue, difficult to isolate but easy to repair. Saved a lot of time.
Not much to say about a trailer plug tester other than it works just fine
and is as advertised. Shipping was prompt and I was able to solve my neighbors
wiring problem quickly without a hassle.
If I ever need any trailer related parts or ?? You people will be the first that I will
contact.
Thanks
Roy - 10/12/2020Totally transformed our 2017 Newmar Canyon Star ride. Best investment ever.
I bought the 7-way LED circuit tester. I bought a used Class A motor home and have had problems with the 7-way plug on the motor home This will help me resolve the last issue. A few weeks ago I had also purchased the 4-way flat LED tester and now have both in my tool box. Thanks
Gary W - 06/11/2020Nice tool to keep on hand
Great product, that makes a quick check to insure the vehicle is not the problem with the trail lights/brakes. Cuts the troubleshooting in half.
Does a great job, it always tell whats working or not. I have used it on other folks traiers to help get them going aging
Very simple tool and works great for troubleshooting issues
Just tried it and it works perfect!
The tester plugs in easily and works fine. It's hard to remember what the lights mean. It would be helpful to include a small heavy paper or plastic card that could be carried with the tester that identifies the lights.
Arrived promptly and it worked as expected when I tested it on my tow vehicle. A previous reviewer stated that he wished there was a card that listed what each light tested. It is marked on the plug around the test lights, but the printing is the same color as the plug. That is the only reason that I gave this product 4 stars. I used a paint stick to highlight the markings so that I can read them easily without my glasses.
works well. worth the price. you have to make sure you get the correct one. those 7 pins can be wired differently. email them and tell them what vehicle you have. some trailer hitches have the groove on top some on the bottom. if yours is on the bottom you will have to lay on the ground to read it, because the lights will be pointing at the ground. the lights are on the groove side.
I had been looking for a tester like this locally but could not find one. I ordered it and it arrived in short order, it works great and is a great addition to my tool bag!
Blue M - 06/16/2017Super helpful to have one of these testers. I suspected my trailer battery was not getting charged by the tow vehicle, and this tester confirmed the problem was my 12 volt wire is not active. Saved me time as now I know where to go next for resolution. Also easily can confirm my truck's trailer plug works without having to hitch up. Totally worth it in time saved.
Very pleased
Bruce S - 11/15/2021This tool reduces effort in hooking up the towed vehicle/trailer to check out trailer wiring. Simple, effective.
Awesome tool
Just what I needed.... I have 4 trucks and 6 trailers, and when a light isn't working, I have to figure out where the issue is originating.... with the 7-way circuit tester, I now know the trucks are good to go..... thanks etrailer!
I use it after installing trailer wiring on my trucks. Works great!
Ryan - 03/13/2018This is so easy to use. I keep it in the package for the easy to read light definition on the back. I love that the product is shaped like a handle for easy unplugging.
Good and useful product. Only problem is that if the Pollak keyway on your vehicle is on the bottom side you can't easily see the LED lights! This would be a more useful product if the lights were visible from both sides. Suggest a design change to do that would be appropriate.
2021 Denali 2500 HD
Turn indicator and emergency flasher indicators dont function
Dont buy it if you have this vehicle, which is brand new, FYI
Very handy to have around.
Easy to use, well made circuit tester. Great choice for a tool to throw in the truck to have ready anytime you hook up a trailer.
Has instructions on back of package showing positions of all wiring locations
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