A circuit tester that plugs into the 7-way trailer connector on the vehicle and emulates a trailer. The lights let you know what functions (brake, turn, tail, stop, reverse and 12V) are working properly and what functions are not.
Features:
Note: Designed for use with Tekonsha and Draw-Tite aftermarket brake controllers and Ford OEM brake controllers. May or May not work with other manufacturers brake controllers.
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 7-way trailer connector vehicle tester, part number TR20117 from Tow Ready. All right, this is a handy device to keep with your vehicle. You can use this to test your vehicle any time. For instance, you have a problem with your trailer, you're not too sure where to start. Go ahead and use this tool in your 7-pole connector in your truck to verify your truck is working fine, then you know it's on the trailer side. Now the indicators are going to be these LEDs right here.
They have their own markings. TM for the running light circuit or trailer marker lights. LT for left turn, twelve volt power supply, so something in your trailer may require twelve volts like the interior lights or something like that. BK for the output from your brake controller. BU for your backup lights, reverse lights, and RT for your right turn signal.
And bye the way, with the brake controller this test was actually designed for use with Draw-Tite or Tekonsha brake controllers, and also the Ford OEM brake controller as well. This may or may not work with other brands of brake controllers out there. Let's go ahead and plug it into our truck here and show how it works. Just like any other 7-pole connector, you just push it in place. Make sure it's fully installed. You can see where I already have a couple of lights showing up.
One's going to be four a twelve volt power supply, and one's going to be for a brake controller outlet. All right, in this case our brake controller sends out a small trace current to look for a completed circuit, so that's why we have it lit up already and we're not even using our controller. That's perfectly normal. Okay Let's go ahead and try the running light circuit next. All right, that's our indication for the running lights.
Let's try our left turn signal. Okay. Now let's try our right turn signal. Okay. Let's look for our brake signal, which would be indication on our left turn and right turn signals. Okay. All right, and now we'll go ahead and try our back up lights, which we will put the vehicle in reverse. That will finish it for part number TR20117, the 7-way trailer connector vehicle tester from Tow Ready.
Average Customer Rating: 4.7 out of 5 stars (193 Customer Reviews)
A circuit tester that plugs into the 7-way trailer connector on the vehicle and emulates a trailer. The lights let you know what functions (brake, turn, tail, stop, reverse and 12V) are working properly and what functions are not.Product works well but as others have mentioned, the red LED lights are hard to see in bright sunlight without cupping your hands to block out the sun. Otherwise this good product would be great! 386043
With this product I was able to narrow down my electrical problem to my truck and not the trailer, and by knowing that the problem was the truck I was able to narrow down the problem down to a 1 foot long piece of wire behind the tail lights but before the outlet. I did all this by simply looking at the tester and following the wires with my eyes. This tester saved me several hours of time, money in parts I didn't need and not to mention the immeasurable frustration caused by trying to find electrical wiring problems. 116192
The product wasn’t very useful for my application. I have an OME installed trailer kit which has an isolation box between the vehicle and the trailer connector. I could tell the turn signals worked and that the electric break controller was working but everything else caused the LEDs to glow with what looks like high impedance semiconductor leakage regardless of whether the light was off or on. There just not enough load in the tester to bleed off stray voltage. I went old school with two clip leads, a 12 v bulb and an ice pick to verify that the vehicle was functioning properly. I have no confidence in what the tester indicates when the LED glow and whether the trailer connector is working or not. This will probable work if you only have copper between your vehicle lights and your trailer connector. 94367
The product plugs in and lights up but the only fault I found is it will not check battery and brake function as should because of the Ford computer. The plug does not pull enough amps for the computer to pick up a trailer connection made. So all that lights up is the other lights such as tail, turn and marker lights. In the description it said it would work with the Ford factory (in dash) controller 596417
923050
I have a 2019 F150 which has a 7-pin and 4-pin receptacles arranged vertically so that when you plug this tester in the lights face down and you need a mirror to see them. HOWEVER, I was able to loosen the "cable clamp" set screw and gently rotate the end so now I can see the lights. According to Tow Ready, the internal wires are not long enough to do this so just be gentle and stop when you feel the slight resistance. Might not get a full 180 degree rotation but you get enough to see the lights easily! 922915
Tester is great. Only problem is that using it on my 2015 Chevy Silverado, I have to get down on my hands and knees and then look up at it. I know that it is because of the way Chevy installed the receptacle, but that doesn't make it any easier to use. 921966
It worked great and led me to my wiring problem. 921036
Not only does etrailer carry a huge line of products but they are high quality with multiple solutions for one’s needs. The price is right, delivery is fast and support is unmatched with advice as well as “how to” vids. 917784
The package came without a bruise and before I expected it. GOOD JOB! 903395
This doesn't work with the 2020 Porsche Macan. 901848
Simple, easy to use. Does exactly what I want it to do. 894499
Well rewired my truck and first time was a success! Yay! Worked like a charm and did its job! 878005
Sorry but it's been only 4 months. It works fine. 875921
Fast, excellent service! 874523
Fits perfectly into 7-pin and works great, verifying everything is working properly! 866086
Works great 864231
Good product shipped on time. Works great small easy to store in my truck. 861087
Works perfectly! 856468
Easy way to check wiring! I have loaned this to other campers in a campground to help them isolate a problem, and it has been quite helpful. Small and easy to keep in my toolbag. 853201
FAST SHIPPING 848950
Received the product and it works, will.make future testing easy. 848049
Every thing worked out very good 852123
Great 817631
Purcased this product in conjunction with a a 5th wheel/ gooseneck trailer wiring harness. Once the wiring harnesses was installed this tester made it easy to verify that all light functions were working properly without having to actually hook up to a trailer. 5 stars! 778256
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