Pollak 7-Way to RV Socket LED Circuit Tester

Pollak 7-Way to RV Socket LED Circuit Tester

Item # PK12741

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Pollak Wiring - PK12741
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In Use/Installed


  • Tools for Wiring
  • Testers
  • Tow Function Tester
  • Pollak
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. Lowest Prices for the best wiring from Pollak. Pollak 7-Way to RV Socket LED Circuit Tester part number PK12741 can be ordered online at etrailer.com or call 800-298-8924 for expert service.


  • All Info
  • Reviews (28)
  • Q & A (15)
  • Videos (2)
  • Photos
  • Why etrailer?

Pollak Wiring - PK12741

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:

  • 7-way circuit tester
  • 12V power
  • Function Codes:
    • BU: back up or reverse circuit center pole
    • RT: right turn/brake
    • TM: taillights
    • LT: left turn/brake
    • BK: brake controller output
    • 12V: 12-volt power feed


12-741EV Pollak 7 Way to RV Socket LED Circuit Tester







Video of Pollak 7-Way to RV Socket LED Circuit Tester


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




Video Transcript for Pollak Wiring - Tools for Wiring - PK12741 Review

Today we're going to be taking a look at part number PK12741. This is the Pollack 7-Way to RV Socket LED Circuit Tester. This tester's going to tell you which functions are working in a 7-way trailer connector. All you have to do is plug in the tester. Plug it into a 7-way connector, and then the LED lights are going to indicate which functions are working properly. It's got the indicators right here.

It's got the lights, and then underneath each light and on top of the light, it's going to tell you what the functions are, and I'll go over that here at the end of the video. The unit's made from a really nice, durable, plastic construction, so it's going to be corrosion-resistant. It's going to have the easy-grip finger tabs that's going to make it really simple to connect and disconnect. When you connect the plug to your connector, each light will light up when the specific function is activated. Right here it's got the little indicators. BU is going to stand for backup or reverse circuit, that's going to be the center pole connection.

RT is going to signify the right turning brake. TM is for the tail lights or running lights. LT is for the left turning brake. BK is for the brake controller output, your electric brakes. Then 12V is going to be the 12-volt power feed.

Really easy system to use, I took it out to my truck and plugged it into my connector. It worked perfectly, letting me know which functions are wired correctly and functioning well. .


Customer Reviews

Pollak 7-Way to RV Socket LED Circuit Tester - PK12741

Average Customer Rating:  4.9 out of 5 stars   (28 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.

- PK12741
by:

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. 271218



- PK12741
by:

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. 452226



- PK12741
by:

Works great 555195



- PK12741
by:

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. 512313



- PK12741
by:

Great tester. Works like a charm. Don't know why I waited so long to get one. Always relied on old fashion type of testers. This is far superior, and indicates flawlessly. No more doubting or second guessing. Shipping was painless. Received item in about 5 days. Darn good for a shipment to Canada. 573077



- PK12741
by:

Order processed mailed delivered overnight. Great service. 330327



- PK12741
by:

I use it after installing trailer wiring on my trucks. Works great! 352166


Comments

It still works fine. No complaints.

Ryan - 03/13/2018

35847

- PK12741
by:

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! 261344


Comments

Wonderful! Perfect to keep in my door pocket, just to be sure!!

Blue M - 06/16/2017

25078

- PK12741
by:

Excellent product 633159



- PK12741
by:

Worked as advertised 587976



- PK12741
by:

Works as advertised 578796



- PK12741
by:

Exactly what I wanted. Arrived fast and good price. Excellent communications throughout the transaction. 553618



- PK12741
by:

Goof proof way of checking the plug 545448



- PK12741
by:

Really quick delivery. Shipped the same day I ordered. Appears to be exactly what was advertised. 510656



- PK12741
by:

Good price & shipping cost. Arrived on time and worked as it should. Plenty of information on the website to help you. 487205



- PK12741
by:

Seems to work fine 460793



- PK12741
by:

Great quality !!! Great prices !!! Fast shipping !!! 458085



- PK12741
by:

Makes short work of a problem. 410579



- PK12741
by:

Works good. Fast shipping. 405514



- PK12741
by:

Worked as advertised. Would recommend 402173



- PK12741
by:

Great service and follow up Thank you Rick 384820



- PK12741
by:

They are doing their jobs, as I ordered them thanks Lloyd 355435


Comments

All Good,THANK YOU

Lloyd S - 03/12/2018

35821

- PK12741
by:

Product was delivered on time. Look good in the package. Have not used it yet. 344748



- PK12741
by:

works great. 339798



- PK12741
by:

Great little tester. Easy to read. Nothing to break. 339674



- PK12741
by:

Product worked as expected. 332526



- PK12741
by:

Good product. Fast shipping 270996



- PK12741
by:

This tester makes quick work out of making sure that a trailer plug is wired correctly, I typically use it to make sure that when someone uses one of my trailers that their plug is wired correctly. 156878


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28

Ask the Experts about this Pollak Wiring
Do you have a question about this Wiring?


  • Standard 7-Way Wiring For Vehicle Side Trailer Connection
  • I don't know which truck or trailer isn't wired standard, but it sounds like with multiple trailers working on your vehicle that your friend's truck and trailer are wired wrong, but to fit each other. I've attached a picture of what each of the 7 pins are set to function when set up with the standard configuration. I've also attached an article on trailer wiring to help. I suggest using a circuit tester like # PK12741 to help you determine if your truck is wired correctly and what function...
    view full answer...

  • Will 7-Way Trailer Connector Tester Work With 2011 Chevrolet 2500 HD Factory Brake Controller
  • The TowReady 7 Way Trailer Connector Vehicle Tester you referenced, # TR20117, is not compatible with all factory brake controllers. I don't believe it is compatible with your 2011 Chevrolet 2500 HD. A similar design that is compatible is the Pollak 7-Way to RV Socket LED Circuit Tester, # PK12741. This will work with your vehicle's factory controller and will be bright enough for outside use. You may need to shield direct sunlight from interfering with your reading.
    view full answer...

  • Taillights and Turn Signals Working But No Brake Lights on Trailer
  • Almost every trailer in the U.S. uses a 2-wire or combined wire tail light setup. This means that the turn signals and brake lights are on the same circuit and use the same bulb in the trailer tail light assembly. Because of this, virtually every trailer wiring adapter is designed to carry the turn signal and brake lights on the same pin circuit, so I would assume that this is the case for your 7 to 4 way adapter. It sounds like with working turn signals and taillights, that the problem...
    view full answer...

  • How to Determine the Functions of the Pins on a Vehicle Side 7-Way Trailer Connector
  • The Pollak circuit tester # PK12741 will tell you which functions are working in a 7-Way trailer connector but it doesn't tell you the location of the functions within the connector. But I can tell you that. If you are looking at the face of a vehicle side 7-Way where you would connect the trailer: 1 o'clock position is 12 volt power 3 o'clock is right turn and brake lights 5 o'clock is output to trailer brakes 7 o'clock is ground 9 o'clock is left turn and brake lights 11 o'clock...
    view full answer...

  • What to Use to Test 7-Way Trailer Connector
  • To test a 7-way trailer connector on the rear of your vehicle you can use the Pollak Tester # PK12741. This tester is designed to work with all 7-way connectors. Another option is to use a circuit tester like # 40376 and go come pin to pin testing each individually. If you're trying to test the trailer side connector it's a little different. A disconnected trailer doesn't have a power source so you will need something to provide it. The Hopkins Tow Doctor # HM50928 and Tekonsha Circuit...
    view full answer...

  • Brakes on My 5th Wheel Are Not Working But Trailer Lights All Work Fine When Connected
  • If you have electric brakes or electric over hydraulic brakes, the first thing to do in either case is take a circuit tester like # PTW2993 to test your signal from the brake controller to the trailer connector at the rear of your 2015 Ram or the bed if you have the relocation attachment like # 41157. With the alligator end of the tester clipped to a clean ground, touch the probe to the 5 o'clock position while hitting the manual override on your brake controller. You can also use a 7-way...
    view full answer...

  • P3 Brake Controller Does Not Light Up Circuit Tester PK12741
  • The P3 brake controller # 90195 will only send back a little bit of power when just sitting so if you use the manual override on the controller then it should light up the tester solid. Using the brake pedal to test also will not work properly because the controller will not send back power if the vehicle is not moving. There are other ways to test a brake controller. In the truck cab you will need to sever the blue wire several inches from the back of the controller. Then use a circuit...
    view full answer...

  • Tricky Tow Package Wiring on 2013 Audi Q7 to Think a Trailer is Connected
  • Circuit tester # PK12741 will likely not draw enough power to make the tow package on your 2013 Audi Q7 think a trailer is connected. This is due to the light power draw from the LED lights. What you need is adapter # C57003 for a 7-Way to 7-Way or # TR20141 for a 7-Way to a 4/5-Way. These adapters have load resistors that will simulate additional load on the system so that the vehicle won't throw the bulb out alert when a trailer is connected. If you are just doing some testing...
    view full answer...

  • Troubleshooting Trailer Brake Issues on 2004 Ford F-350
  • It sounds like you have a wiring connection issue with your brake controller or a bad brake controller. When you plug in a trailer, your brake controller will see a power draw on your trailer brake circuit to tell the controller there is a trailer with brakes connected. From what you wrote, it seems that your brake controller immediately sends braking power to the trailer when it senses connection. I recommend first cleaning your 7-way connections on your vehicle and trailer using...
    view full answer...

  • Tow Package Fuse and Relay Locations for a 2005 Ford F-350
  • The fuse locations and functions are listed in the owner's manual for the 2005 Ford F-350. There are a lot of documents on the Ford site for the truck so it is possible you were looking at one of the others which would not be helpful for this. The fuses related to any tow package wiring are as follows: Passenger compartment fuse panel: Location 20: 15 amp, Trailer tow Electric Brake Controller (EBC) Location 28: 10 amp, Trailer tow EBC logic Location 38: 20 amp, Trailer tow park...
    view full answer...

  • Trailer Tow Fuse Locations for 2004 Ford F-350
  • I took a look at the online owner's manual for your 2004 Ford F-350 and was able to find that the trailer tow battery charge/12V power circuit fuse is located in the number 115 position and is a 20 amp fuse. There is also a trailer battery charge relay located in the number 305 position. The fuse/power distribution box is below and to the left of the steering wheel, by the brake pedal. In order to access the fuse box, you will need to remove the panel cover. Additional fuse and relay...
    view full answer...

  • Troubleshooting Only Running Lights Working on Trailer
  • The first thing to do is take a look at your owner's manual to locate any trailer fuses or relays and ensure they are all there and in working order. If they are, in order to determine the specific problem you will need to purchase a circuit tester if you do not have one - the very handy Cordless Circuit Tester # PTW2979 would be my strong recommendation due to how easy it is to use - and test the connector on your vehicle after disconnecting it from your trailer. Check the wiring going...
    view full answer...

  • Does Pollak 7-Way to RV Socket LED Circuit Tester Work With 2016 Ram Factory Brake Controller?
  • There are no compatibility isseus with use of the Pollak 7-Way to RV Socket LED Circuit Tester # PK12741 so it will work just fine on your 2016 Ram 2500. I've included links to a pair of video reviews of this tester for you to check out as well.
    view full answer...

  • Troubleshooting Trailer Tail Light Functions with 2010 Toyota FJ Cruiser
  • I recommend using a circuit tester like # PTW2993 to check the wire function at your 7-way. You should have both the stop and turn combined for the left side at the 9 o'clock pin position and the stop and turn for the right side combined at the 3 o'clock position. When you have the brake on, the turn signal should still function. You can use a 7-way tester like # PK12741 to test that function as well. I've attached a video to assist. If you have the both functions for each at that...
    view full answer...

  • Can 7-Way Circuit Tester Be Used on Upside Down Ford 7-Way
  • We have 7-way testers that will work for you like the part # PK12741 but since your 7-way is upside down the display would be harder to view since you'd have to be underneath the tester. We don't have an easy solution for that unless you wanted to try and rotate the 7-way 180 degrees.
    view full answer...


Do you have a question about this Wiring?




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Info for this part was:

Installed by:
Joe V
Video by:
Andrew K
Expert Research:
Michael H
Written by:
Laura H
Video Edited:
Dustin K
Photos by:
Jim W
Installed by:
Cole B
Photos by:
Amber A

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