Pollak Heavy-Duty, 7-Pole, Round Pin, Trailer Wiring Connector - Trailer End

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• Trailer Brakes Activating With Brake Pedal Is Pressed With No Brake Controller Installed
  If you're getting voltage to the trailer brakes with no controller installed, and when it WAS connected it wasn't reading the brakes, it sounds like your trailer connector on the vehicle is either damaged or has had corrosion spread to the terminals inside where the wires attach. Once the terminals corrode, the corrosion builds up can can actually allow adjacent circuits to bridge which would explain why you get brakes without a controller installed. It's possible that the brake lamp circuit...
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• Wiring Adapter 7-Pole Round to 7-Way Blade with 4 Feet of Cable Between Connectors
  The Pollak Trailer Connector Adapter # HM47425 that you referenced offers 7-1/2 inches between the 2 connectors, and is 14-1/2 inches long overall. This is the longest pre-wired 7-Pole round to 7-Way blade adapter that we offer. You can use individual connectors to wire together an adapter that will have as much room between the connectors as you need. I recommend using the Bargman 7-Way Super Sealed Connector with 4 Foot Cable # 50-87-004. This 7-Way blade vehicle-end connector is pre-wired...
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• Brake Controller On 2015 Chevy Silverado Not Reading Trailer
  Your brake controller is displaying that message because there is an interruption somewhere in the output circuit between the brake controller and the brake magnets on your trailer. Are you getting any signal at the brake pin on the 7-way on the truck with the manual brake switch activated? The pin is in the 5:00 position, and you can use a circuit tester like # PTW2993 to test. If you're not getting signal at the pin, the controller could be bad, or there could be an interruption in the...
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• Adapting a European 13-Way Trailer Connector to Work with a 7-Way on a US Spec Mercedes
  We do not carry an adapter to tow a European trailer with a US spec vehicle and trailer connector. You would have to change the trailer connector or the vehicle connector. Changing the vehicle connector will likely be easier. Your 2009 Mercedes GL320 likely has as 7-Way blade style trailer connector. So for the trailer side use # H20042. In order to keep the turn signals and the brake lights separate on the trailer you would also need to use a converter, # 118158. So on the # H20042...
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• Compatibility of a Pollak Heavy-Duty 7 Pole Round Pin Trailer Wiring Connector with Blade Connector
  The Pollak 7-pole round pin part # PK11700 is not compatible with Pollak 7 and 4-pole connector # HM40975 because it has blade style pins. What I recommend is you change your trailer connector to a 7-Way blade connector part # A7WCB. You will also need a wiring harness like # PK11998 to install the 7/4-Way connector. It plugs into the back of the 4/7-Way. The connector mates with RV-style socket to form a weather tight seal. -Red - Left Turn and Stop - 14 gauge -White - Ground - 10 gauge -Blue...
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• Recommendedations To Change 4-Way Connector On Trailer To 7-Way Connector
  It sounds like you want a permanent change from the 4-way connector to a 7-way connector on your trailer. We carry trailer-end 7-way connectors and the one I recommend is the Pollak Metal 7-Pole Connector, part # PK12702. This is a blade-style connector. If you have a round-pin connector on your vehicle I recommend part # PK11700. This would require cutting the 4-way connector off your trailer. You would need to test the wires on the trailer using a 12V power source to see what each...
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• Availability of 7-Way Round Pin Wiring Extension
  We do offer quite a few types of trailer wiring adapters/extensions that can be seen by clicking on the linked page. Just select the vehicle end you need (we offer both 7-way round and 7-way flat blade style connectors) and then the other end you need. For a 7-way round pin to a 7-way blade you can use # HM47425. Or for a 7-way blade to a 7-way round use part # 47595 or # F77R. These products feature one male and one female connector. We do not have a male 7-way round pin to female 7-way...
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• What is the Function of the Red Wire on a Pollak 7-Way Trailer Connector/Wiring Harness
  On a Pollak 7-Way trailer connector/wiring harness the red wire is for left turn signal and brake light functions. On many aftermarket wiring harnesses you usually see a yellow wire for left turn and brake lights at the trailer connector. But on a Pollak 7-Way the red wire takes that function. I have included a link to our help article on trailer wiring which includes diagrams of the front and back of both vehicle and trailer side connectors.
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• How Many Volts Should I Get to the Trailers Brakes When Pressing the Brake Pedal
  You should get 12 volts coming from your brake controller if the controller is set on its highest setting. If your not, the first thing to do is to examine the trailer connector for any corrosion or debris and clean it if necessary. You'll also want to check the ground wires for the magnets and the brake circuit wire from the brake controller for any damage or pinches.
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• Troubleshooting Trailer Brakes that Lock Up When Trailer Connector is Connected
  It sounds like the 12 volt accessory circuit has either been ran to the brake output circuit or it is shorting out to it. Most likely the problem is on the trailer wiring side of the equation as it looks like your truck is brand new. If you check out the diagram I attached you will see how a 7-way connector is typically wired for you to compare to the 7-way on your trailer. To check for shorts you would need to go over the wiring of the connectors looking for any bare wire that might...
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• What is the Correct Trailer End Plug for the OEM Dodge 7-Way Connector
  The correct trailer end connector for your Dodge truck with OEM 7-Way connector is the Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector - Trailer End, item # PK12706. If you are looking for a more durable style of connector the Pollak Metal 7-Pole, RV-Style Trailer Connector - Trailer End, item # PK12702, would also be a good choice for your vehicle. Finally the Hopkins Endurance 7-Way Trailer Connector - Trailer End - Ergonomic Design - w/ Holder, item # HM48500, is an extra...
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• Troubleshooting Trailer Wiring that Stops Working With Headlights on
  Try improving the connection of the main ground wire of the trailer wiring harness. Make sure it is attached to a clean metal surface. Or you can run all of the trailer wires back to the main ground. This is actually the ideal solution. But you can also check the current grounds for the lights to make sure they are making a solid connection to a clean metal surface. What you described is the classic insufficient ground scenario so finding a way to improve the grounds will fix the problem.
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• Availability of a 7-Way Round Pin to 5-Way Round Pin Trailer Adapter
  A 7-Way round pin to a 5-Way round pin is a rare item indeed. There is no adapter that we carry that is going to work for you. What I recommend is to change the connector on the trailer end to match the one on the truck. For a 7-Way round pin, trailer side connector, use # PK11700. You will just need to make sure that the wires and function configuration mirror what is on the truck. You do not want to just go by color but by actual wire function. I have included a link to an FAQ article...
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• Can a Combined Stop and Turn Signal Circuit be Converted to Separate Circuits
  Yes, there is a special converter, # 118158, that takes the combined circuit and separates out the signals to give you just turn signals and just brake lights on separate wires. You will install this converter on the trailer side, behind the connector. The left turn/brake goes to the yellow wire, the right turn and brake goes to the green wire. Make sure to ground the white wire. On the out put side the red wire is the brake lights only, yellow is left turn only, and green is right turn...
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• How to Add a Center Mounted Third Brake Light to a Trailer
  Although it is not required by law, what you are wanting to do is certainly possible. Because trailer tail light systems combine the stop lamp and turn signals for each side onto a single circuit, you will need to use a vehicle-to-vehicle tail light converter, part # 118158 to split the brake light circuit back out. The white wire on the input side of the converter would ground to the trailer frame, the green input wire would tap into the right turn circuit on the trailer and the yellow...
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• Troubleshooting Using 7-Way to 5-Way Adapter that Locks Up Brakes
  A lot of times we see a similar issue with 6-way connectors or 6-way adapters. The issue with them is that there are two different ways a trailer 6-way will get wired and the difference is that the 12 volt and brake signal get swapped. So what this means is that either your adapter is wired strangely or your trailer wiring is. Most likely it's the trailer as adapter manufacturers typically aren't as prone to wiring issues as people are when they wire up trailers. You're going to want to...
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• Wiring a Switch to the Dash to Control Power to a Gate on a Dump Trailer
  For a switch to supply or remove power going back to the gate you can use a simple on/off switch such as # PK34213. This switch is rated up to 50 amp applications. For a switch that has 3 positions you could use on/off/on switch # PK34218 which is also rated for up to 50 amps. For wire you can use # 10-2-1, which is jacketed 2-wire sold by the foot. The flow of the power will go from the source (battery or alternator) to the input on the switch and then from the output terminal of the...
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• What is an ICC Marker Light for a 60 Foot Gooseneck Trailer
  ICC stands for Interstate Commerce Commission. An ICC light is on a switch, though it could also be wired into another circuit such as the running lights. It is basically so that when you flip the switch the marker lights will flash. Typically this was only found on commercial applications (the trucking industry). The ICC was abolished in the mid 1990s. You can look up current regulations as specified for trailers by the Federal Motor Vehicle Safety Standard or FMVSS 108 for the US and...
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• Adapting 7-Way Trailer Connector on 2010 Acura MDX to Accommodate 5-Pole Flat Connector
  We have exactly what you are looking for, the 7-Way to 5-Pole Flat Adapter, part # A75TB. This adapter is your basic 7 to 5-Pole adapter. We have many others to choose from, I have included a link to all the other available options below.
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• Pin Out Location Functions for Pollak 7-Pole and 7-Blade Connectors
  If the 7 pin Pollak connector that you bought is the Pollak Heavy-Duty, 7-Pole, Round Pin, Trailer Wiring Connector # PK11700 then when you are looking at the connector here is what the different functions will be: 12 o'clock - White-Ground 2 o'clock - Brown-Tail/Running Lights 4 o'clock - Green-Right Turn/Hazard 6 o'clock - Red-Stop Lamps 8 o'clock - Yellow-Left Turn/Hazard 10 o'clock - Black-Clearance/Marker Center - Blue-Auxiliary Circuit If instead you have the Pollak Black Plastic,...
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• Trailer Brakes Humming When Connected to Tow Vehicle
  The trailer brake controller on your tow vehicle will send a small pulse charge to sense if a trailer is connected, so the small amount of power you are testing at the brake output pin on the 7-Way without the brakes engaged is normal. If you are hearing a buzzing or humming sound coming from the brake assemblies though as soon as you connect the trailer (without engaging the brakes) then I do recommend inspecting the wiring around brakes to make sure there aren't any exposed or pinched...
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• Wiring # PK11700 Pollak 7-Way Trailer Connector
  The white wire is typically ground, you can confirm this by checking to see if it connects directly to the trailer frame. Your yellow wire is usually the left turn and brake lamp, green is right turn and brake light. The yellow/black and green/black are running lights, with the green/black running down the passenger side and the yellow/black running down the drivers side. You can confirm this by using a car battery, grounding the white wire to the negative terminal, and applying 12-volts...
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• Troubleshooting a Tekonsha Prodigy P2 That is Getting an N.C. Error
  The code you are getting with your Tekonsha Prodigy P2 # 90885 has to do with the connection. The voltage you read looks to be optimal, so it is definitely not that. The "n.c." code you are getting will refer to a few things that have gone wrong. First, the trailer is not connected to the tow vehicle. Causes: (A) The trailer connector is becoming disconnected while towing (B) The trailer brake port (5 o'clock position on the 7 Way) becoming corroded and not allowing for a solid connection. Testing...
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• Installing Trailer Plug for Correct Wiring Location for Trailer Functions
  Rewiring the Pollak Heavy-Duty, 7-Pole, Round Pin, Trailer Wiring Connector - Trailer End # PK11700 simply means disassembling it. The outer housing has a screw to release the connector and give you access to the screws for each wire. You will simply loosen the screws as much as possible and slowly and firmly pull the wire with a pliers. I've attached an article to assist with the correct locations for the rewire.
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