Curt 7-Way to RV Socket LED Circuit Tester - Vehicle End

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• Recommended 7-Way Tester that is Compatible w/ Ram Factory Brake Controllers
  I haven't heard of the Curt 7-way tester not working with OEM brake controllers. There was a Tekonsha tester that had problems with Dodge and GM trucks so it is possible. We have been able to confirm that the Pollak 7-Way to RV Socket LED Circuit Tester item # PK12741 is compatible with Ram factory controllers. The Curt 7-Way to RV Socket LED Circuit Tester item # C73NR and item # C66NR are the same testers they're just a different color. There is one thing to note about the use of...
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• Will 7-Way Tester Work with 2020 GMC Sierra 3500
  The 7 Way Trailer Connector Vehicle Tester # C73NR may pull enough power on your 2020 GMC Sierra 3500 so that your truck reads it as a trailer being connected so you can test the functions of your 7-Way. But some of the newer trucks have "upgraded" electrical systems (for lack of a better term) so you will likely need more of a power draw which you can get by using the Lamp-Out Sensor # 20142 which places a larger draw on your 7-Way.
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• 7-Way Tester Recommendation for a Land Rover with 7-Way and P3 Brake Controller
  Yes, we do offer a 7-way tester that will allow you to plug into the 7-way at the rear of your Land Rover to test all of the functions. For that you would want the part # C73NR.
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• Troubleshooting Prodigy RF Brake Controller Installation in 2017 Mercedes-Benz GLE-Class
  The Prodigy RF Wireless Trailer Brake Controller # TK94FR does require that +12V power to operate it be present at the appropriate contact pin on the vehicle's 7-way. This is the pin at the 1:00 position as you look at the socket. Please refer to the arrow in the linked photo. You'll just need a simple probe circuit tester like # PTW2992, or the special type # C73NR to confirm that +12V power is present on that contact. Ground the tester to the vehicle and apply the probe to the pin at...
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• Troubleshooting Left Turn Signal Staying Hot on a 2013 GMC 3500HD Towing a Trailer
  If you used a 7-way circuit tester like our 7 Way Trailer Connector Vehicle Tester # C73NR and the LT circuit stayed lit that would indicate that there is voltage on this circuit at all times which means something is shorting out onto this circuit. Due to the fact that it is hot all the time it would seem that it is the 12 volt power circuit that is shorting to the left turn/brake circuit. I suspect you have a 7-way round connector since on these style connector the left turn and 12 volt...
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• Troubleshooting 12 Volt Power Circuit not Functioning on 7-Way After Re-Wire
  There could be corrosion or dirt inside your 7-way that needs to be cleaned out before all of the circuits of the 7-way will activate. That's the most common reason circuits on a 7-way won't function properly. You can test this easily by using a circuit tester like our part # C73NR to test the wires that feed into the 7-way on the circuits that aren't functioning. If the wires have voltage but not the pins the problem is corrosion or dirt on the inside or outside of the connector. Also,...
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• Pairing Tekonsha TK94FR Prodigy RF Brake Controller to 2020 Mercedes-Benz GLE
  As you mentioned, if you have difficulty getting the unit to pair with the remote, you can simply use an American vehicle equipped with a 7-way trailer connector to pair the unit to the remote, then plug the trailer and remote in to your Mercedes. If one isn't available, you can also use a tester, part # C73NR. In order to pair up correctly, be sure to follow the pairing procedure shown in the linked instructions exactly. I've linked to a demonstration video showing the Tekonsha Prodigy...
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• Troubleshooting 12 Volt Accessory Circuit Not Active on 2018 Ford F-150
  A lot of times the 12 volt accessory circuit isn't active on vehicles for the trailer wiring. Sometimes it's just a matter of inserting or replacing a fuse under the hood of the vehicle. Or in other times a relay has to be installed. We've found that the easiest way to bypass all of that is to use 10 gauge wire like part # 10-1-1 to run from the vehicle's positive battery post through a breaker like part # 9510 to the 1:00 pin of the 7-way.
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• Can Hopkins 7-Way RV Style Trailer Connector and Tester # HM48503 be Used as Just a Tester
  Technically, yes, but Hopkins 7-Way RV Style Trailer Connector and Tester # HM48503 is meant to work as a trailer connector and tester. If you only need a tester to check a vehicle side connector then # C73NR would be the way to go. Since # HM48503 is open at the back I do not recommend using it as just a tester since moisture and other crud could get inside and cause it not to work properly.
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• Best Brake Controller For 2012 Lexus RX 450 Hybrid
  I would first encourage you to test the 7 way connection on your 2012 Lexus RX 450h and make sure that the issues aren't stemming from some sort of damaged wiring/connection. We don't have any confirmation that the Tekonsha Prodigy RF will or will not work on your vehicle, but it could be something simple that is keeping you from using it. You'll want to make sure that all of the circuits are functioning correctly; you can use a circuit tester like the # PTW2992 to verify that each circuit...
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• 12 Volt Power At Trailer Connector Not Functioning on 2011 Ford F250
  You likely have a bad or missing fuse or relay in the power distribution box under the hood. Look for a 25A fuse in position 90 and a relay in position # 102. Examine the fuse and replace if necessary. It's not typically possible to look at a relay and be able to determine if it's bad, but you can replace it with an adjacent relay to see if that activates the circuit. If that doesn't fix the problem, given the fact that the vehicle is 8 years old, before taking it to the dealer, I'd just...
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• Trouble Shooting Inoperable Electric Brakes on a 10K Trailer
  Since you have fresh parts in the hubs and provided they are installed properly, I suspect there is a problem somewhere in the wiring or with the brake controller installation and set up. You will need to check the whole system, step by step, to find out where the problem is. If you have used your truck successfully with other trailer brake equipped trailers, then the brake controller and vehicle wiring should be fine and you can skip the first 2 steps. If you tried it on different vehicles...
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• Can a Breakaway Battery and Deep Cycle Battery be Charged off of the Same 12 Volt Line
  What you could do is use the center pin on a 7-Way and instead of having the reverse light circuit on that pin you could remove the wire that is there and run a 10 gauge wire, such as # 10-1-1 sold by the foot, from it up to the truck battery via a 40 amp circuit breaker # PK54540. Then run wire from the center pin on the trailer side to the deep cycle battery to maintain it. This way the batteries each have their own 12 volt source and there is no chance of back feeding. Another option...
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• How To Determine Compatibility of the Autowbrake Electric Brake Controller
  The Autowbrake Electric Brake Controller part # 3430001 simply requires an active battery charge line circuit which is a wire run from the trailer connector to the battery to provide a small charge for the trailer battery while in tow. This wire should have been installed along with the 7-way. That said, you can test this using a test light or plug-in tester like the 7 Way Trailer Connector Vehicle Tester part # C73NR. If the circuit is not active you can activate this yourself using wire...
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• 7-Way Tester Recommendation for 2016 Chevy Silverado 1500
  The 7-way tester part # C73NR would work on your 2016 Chevy Silverado 1500 for all circuits unless you have an integrated brake controller. That's pretty much the only circuit we have found that doesn't like to work with this tester on the newer Chevy trucks.
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• Where is 12 Volt Trailer Wiring Circuit on 2019 Ford F-450
  I pulled up the owners manual of your 2019 Ford F-450 and the fuse slot 27 is the one that carries the 12 volt trailer wiring circuit. Relay slot 37 is the relay related to this circuit too. One option you have would be to bypass the factory wiring and run your own 12 volt circuit straight to the battery. You would need 10 gauge wire like part # 10-1-1 sold by the foot and a breaker like part # 9510. You would just run the wire from the 12 volt pin of the 7-way at the rear of the vehicle...
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• Constant Voltage on 12V and Brake Controller Output Wire with Curt TriFlex Trailer Brake Controller
  When testing the wire functions after installing the Curt TriFlex Trailer Brake Controller # C24VV and Wiring Harness # C51515 in your 2014 Toyota Sienna, it is normal for both the 12V and brake lights on a tester to light up without actually activating the brakes. This is because the brake controller sends out a small trace current to look for a completed circuit. I have attached a demonstration video on a similar 7 Way Trailer Connector Vehicle Tester # C73NR that shows this right around...
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• Will 2016 Ram 1500 Need to Be Flashed By Dealer After Installing Aftermarket Brake Controller
  After installing the Tekonsha Prodigy P3 # 90195 and Custom Wiring Harness # 3024-P on your 2016 Ram 1500, you will not need to take your truck to the dealer to have it flashed. The reason to take it to the dealer to get flashed is if you had to uninstall a factory integrated brake controller to install the aftermarket controller, like the P3. It is normal for the brake controller to stay on for 15 minutes or so after the truck has been started, even if no trailer is connected. Once the...
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• Using Trailer Wiring Tester to Sync and Setup Prodigy RF Brake Controller
  When pairing the Prodigy RF Wireless Brake Controller # TK94FR we have heard of this issue a few times and it doesn't have to do with the vehicle at all. I reached out to my tech contact at the manufacturer and he said that they are rewriting the instructions because it is confusing and the double zero won't appear until it is paired, which doesn't happen when it is new or even sometimes when it is transferred to another vehicle. So, here is a step by step to get you going based on the...
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• 12-Volt Feed to Trailer Connector on 2016 Newmar Bay Star Sport 2903 Motorhome Has No Power
  Did you mean to say that your motorhome was built on the F550 chassis? According to the literature I found online, that's the chassis that Newmar built the 2016 Baystar Sport 2903 on. If that's the case, you've likely missing the fuse that powers up the 12-v feed to the 7-way that many use to keep a trailer battery maintained. According to the owner's manual, the fuse should either be a 40A in location # 10 or a 25A in location # 90. These can be found in the power distribution box in...
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• No Power On 12 Volt Circuit on 7-Way Trailer Connector on a 2006 GMC Sierra 2500HD
  On some GM trucks, even those with factory tow package, the wiring is not always complete. You may need to manually run a wire from the front of the truck to the back of the 7-Way. I have included a link to the right that should help. It talks about the under the hood connections that might need to be made when installing a brake controller but also mentions the 12 volt power wire. Presumably, if the wire is attached directly the positive terminal, it would have power all the time. But...
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• 2007 Toyota Tundra 12V Trailer Wiring Circuit Not Active
  There will be a fuse and/or relay associated with the 12 volt accessory circuit of the 7-way on your 2007 Toyota Tundra. Check under the hood of the truck for that circuit and replace as needed. Your other option is to run a 10 gauge wire from the 1:00 position of the 7:way all the way up to the positive side of the battery. You would need part # 10-1-1 for 10 gauge wire (sold by the foot), and then a circuit breaker to install on this circuit like part # 9510 as well.
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• Brake Controller Causing 7-Way Trailer Connector to Flicker
  Like most other brake controllers do, the Draw-Tite Activator IV, part # 5504 sends a small test pulse of voltage through the brake output circuit to confirm that the trailer is plugged in and that the brake magnets are receiving the signal. This would explain the flickering you're getting on the # C73NR 7-way tester. Are the connectors on the vehicle and the trailer in good condition? If they're older, and you see any white or green corrosion on the pins or sockets, there's a chance that...
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