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  4. Trailer End Connector
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Pollak 6-Pole, Round Pin, Trailer Wiring Connector - Trailer End

Pollak 6-Pole, Round Pin, Trailer Wiring Connector - Trailer End

Item # PK11604
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Establish a secure connection between your trailer and tow vehicle with this 6-pole plug. Round brass pins ensure minimum voltage drop, and pull grips enable easy insertion and removal. Lowest Prices for the best trailer wiring from Pollak. Pollak 6-Pole, Round Pin, Trailer Wiring Connector - Trailer End part number PK11604 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (121)
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  • Why etrailer?

Pollak Trailer Wiring - PK11604

  • Trailer Connectors
  • Trailer End Connector
  • 6 Round
  • Plug Only
  • Pollak

Establish a secure connection between your trailer and tow vehicle with this 6-pole plug. Round brass pins ensure minimum voltage drop, and pull grips enable easy insertion and removal.


Features:

  • Standard, 6-pole plug connects trailer to socket on tow vehicle
  • Round, floating, solid brass terminal pins
    • Minimum voltage drop is ensured
    • Coated with dielectric (non-conducting) grease
      • Prevents corrosion and resistance
    • Easy alignment and maximum contact
    • Solid brass terminal screws
  • Die-cast housing for durability
    • Tapered design with jumbo, finger-pull grips
      • Easy hand-position pull
  • Cable lock with plated steel retainer screw
  • High-impact, ABS thermoplastic interior
    • Includes extended lip for easy removal and replacement
    • Accepts up to #12 gauge wires
    • Has key and keyway to eliminate twisting and breakage
    • Replaceable - minimizes maintenance costs


Specs:

  • Volt rating: 6 volts - 28 volts
  • Current rating: 40 continuous-duty amps
  • Wiring configuration:
    • Color - circuit:
      • White - Ground Return
      • Brown - Tail Lights
      • Yellow - Left Turn
      • Red - Stop and/or Electric Brakes
      • Green - Right Turn
      • Blue - Auxiliary Circuit
  • 1-Year limited warranty


11-604 Pollak 6-Way, Round Pin, Trailer Wiring Connector - Trailer End
Replaces 30205






Customer Reviews

Pollak 6-Pole, Round Pin, Trailer Wiring Connector - Trailer End - PK11604

Average Customer Rating:  4.8 out of 5 stars   (121 Customer Reviews)

Establish a secure connection between your trailer and tow vehicle with this 6-pole plug. Round brass pins ensure minimum voltage drop, and pull grips enable easy insertion and removal.

- PK11604
by:

Received quickly. Easy replacement for my motorhome teather. Well made.



- PK11604
by:

simple replacement. Enough said.


Comments
In a commercial envirnment, I expect to replace yearly.
Chamberlain C - 08/01/2021


- PK11604
by:

I got exactly what I ordered, two replacement cable plugs for my tow bar from car to tow vehicle. Package included easy to follow instructions for wiring connections. The cable package from the tow bar company is pretty pricey but these plugs and the existing cable to repair cost around $10.00. I will probably order two more to have as spares.


Comments
Have no issues since the connector plugs replaced. Very satisfied.
Claude L - 07/24/2018



- PK11604
by:

This was exactly what I needed, thank y ou



- PK11604
by:

old connector was really corroded. This one made replacement fast and easy.



- PK11604
by:

These connectors were high quality by a known manufacturer. I could have bought them locally but I wouldn't have gotten the expert advice and detailed information that I was able to get from eTrailer!. I talked to several people and each one was very knowledgeable. When the parts arrived, it surprised me because they came so quickly! I would readily order from them again if I needed more trailer parts. I used these connectors to adapt a Minn-Kota trolling motor to my fishing kayak and have attached some pictures showing it installed.



- PK11604
by:

Replaced a broken connector, exact fit.



- PK11604
by:

Decided to make a spare pushbutton controller for my dump trailer so I wanted a good 6-pin connector that matched what I had. This was exactly what I needed. Good quality. Quick delivery. Good price. Had one hiccup with my credit card, and CSR's contacted me asap and got it all straightened out in no time. Would definitely order from etrailer again.



- PK11604
by:

Parts are exactly what we ordered. Easy ordering and timely shipping. Etrailer is awesome.



- PK11604
by:

as advertised



- PK11604
by:

Works great, what I needed for the connection for my DC fuel pump to my fuel tank I carry in the bed of my truck. I have been a customer for a couple of years now and will continue to be as you always have everything I need then ship it out in a very timely matter.



- PK11604
by:

Product did hot meet expectations. Had to revert to original plug-in. Hardware purchased incorrect size. Connection failed!



- PK11604
by:

I received the plug/receptacle for my 2002 Chevy van promptly and it was the right fit. The videos provided on the site were very helpful in wiring the plug correctly. All-n-all, a great experience and I would recommend E-Trailer to anyone.



- PK11604
by:

Was impressed with the websites videos showing how to remove, replace and wire these fittings. When the fitting arrived the procedures were as easy as demonstrated. Did note however that the old fittings showed silicone sealant around the wire connection points and don't recall that being part of the instructions, but seemingly a good idea



- PK11604
by:

Purchased some new LED lights for trailer. eTrailer has good prices and a good selection. Shipping was a bit slow but that may be be eTrailer's fault, we all know how the postal service works...or doesn't. No reservations about re-ordering from this company, I like that George followed up with me afterward to make sure I'm satisfied. Order with confidence!



- PK11604
by:

Part was exact as ordered- heavy duty - pollak makes a quality product



- PK11604
by:

I really appreciated the detail etrailer.com provided with each of their products. I was confident of what I was buying and that it would do what I needed to do. I will definitely be buying from them again in the future. Shipping was fair priced and very quick! Thanks a bunch, etrailer.com!! - Ryan



- PK11604
by:

I replaced the connector ends on the cable that hooks from my motor home to my tow vehicle. The PK11604 are better made product than the original connectors. A machine screw is used to hold the Receptial in place as compared to the original which had a flush head wood screw. The terminal hold down screws are stronger and easy to work with when installing the wires.



- PK11604
by:

This electrical plug is everything that etrailer says it is - great product!



- PK11604
by:

I ordered replacement side markers and was pleased to find the bulbs came sealed to the lense. The ones they replaced had twist in bulbs that would work out of the back of the lense. Better than expected product and prompt shipping. Thanks, Jim D.



- PK11604
by:

This worked great. It is exactly what I needed to get my TOAD lights working again. The installation was very easy. As always I got the item very quickly.



- PK11604
by:

All parts delivered promptly and packaged securely. I will be mounting the 6-pin plastic wiring socket into the underside of my Honda Goldwing trunk and connecting the 6-pin connector to my Uni-Go single-wheel trailer.



- PK11604
by:

This item and the receiver were exactly what I was searching for. I have a motorcycle trike, with a matching motorcycle tow trailer. That is what these items were ordered for. Very happy with purchase and shipping.



- PK11604
by:

This connector was used to replace a similar no name Chinese knock-off that had corroded badly. Also, I no longer keep the trailer cable connected and left in the elements. Easy to disconnect both ends and store separately.



- PK11604
by:

Great replacement for my broken connect or.


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Show More Reviews

Ask the Experts about this Pollak Trailer Wiring



  • Ground Wire Location on Trailer For Pollak 6-Pole Connector
    Since different manufacturers can use different color wires you need to test the wires by function and not by color. If there is no white wire present, you can trace the wiring on your trailer to find out where the wires terminate. The wire that is attached to the trailer frame is the ground and should be attached to the 10 o'clock position of the Pollak 6-Pole, Round Pin, Trailer Wiring Connector, part # PK11604. When looking at the connector from the back, the ground would be in the...
    view full answer...
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  • How to Wire 4 Trailer Wires Into the Pollak 6-Pole Trailer Connector
    Typically, the wire colors are brown for running lights, green for right turn and brake lights, and yellow for left turn and brake lights. White is ground. To confirm this on a trailer you can trace the wires back to see where they terminate or take a separate 12 volt battery and use it to power each wire to see what lights up. To wire up the 6-Way # PK11604 with the 4 wires if looking at the back of the 6-Way where the wires attach running lights will be in the 12 oclock position, ground...
    view full answer...
    Image 1 for
  • Troubleshooting Running Light Malfunctions on a Kaufman Trailers Mini 5 Car Hauler
    If the other lights are working correctly, the most likely cause would be a bad ground. Ground issues may not be apparent until a larger load is placed on the circuit, like when the taillights are activated. It is also common for tilting, folding tongue trailers, and trailer with lots of moving components, like your car hauler to have grounding problems due to the moving components. These moving components, prevent full continuous contact of the metal surfaces, and interrupt the ground...
    view full answer...
  • Can a Vehicle Side Trailer Connector be Mounted so that it is Facing the Ground
    If the vehicle side trailer connector is pointed towards the ground then what can happen is the increased likelihood of debris and moisture getting into the connector leading to corrosion and malfunction of the connector. Also, when a trailer is connected, the ground clearance will be reduced and could result in damage to the trailer side connector or the wiring leading to it.
    view full answer...
  • How to Wire a Replacement 6-Way Trailer Connector Onto Old Cattle Trailer
    Typically, the connector wires as follows: Brown wire: tail lights Green wire: right turn and brake Yellow wire: left turn and brake Red wire: brake output voltage Black wire: auxiliary If this does not match up with the way your trailer is wired, you will have to wire it by function, not wire color. The best way to do this would be to use a car battery and apply power to each circuit on the trailer wiring harness. Ground the negative battery terminal to the trailer frame, and apply...
    view full answer...
  • 6-Way Trailer Wiring Recommendation
    Based on the colors you gave me I believe the red wire you have has the best chance for being the electric brake circuit. If you check out the picture I attached you can see the typical wiring of 6-way. Wire color is not always an accurate indicator of function though, so you should check to make sure you know which wire does what. To figure out what the wires all are you can trace them all back to see where they terminate, or you could get a vehicle battery and run a jumper wire to each...
    view full answer...
    Image 1 for
  • Troubleshooting a 6-Way Trailer Connector Install
    By looking at the picture you sent me it looks like the yellow wire is the left turn, the green is the right turn, the brown is tail lights and the white is the ground. Which leaves us with the two black wires. There are a couple options for determining what the black wires are for. You could get a 12 volt battery like a car battery and run a jumper wire from there to black wires to see what functions on the trailer activate. Or, you could trace the wires back to see where they terminate. One...
    view full answer...
    Image 1 for
  • How to Wire a 6 Pole Round Trailer End Plug
    There is a suggested and common method for 6 function trailer wiring. You will have the following functions: Right Turn, Left Turn, Ground, Tail/marker, Brake, Battery. I have included a help article on trailer wiring that includes a diagram and wiring matrix that explains wire color, function, and gauge needed, among other helpful information. Also, there are pictures to the right that show how the connector and receptacle wire by color and function. And I have included a link to a video...
    view full answer...
    Image 1 for Image 2 for
  • Which Wire is the Ground Wire on Sundowner Horse Trailer 6-Way
    Between those two color choices the black one would most likely be the ground wire. However, if you hook it up with the black as the ground and it does not work I would recommend trying the red wire. Also, you should trace both of these wires back on the trailer to see where they terminate. The ground wire should be connected to the frame of your trailer. Whichever one connects to the frame is the ground. The ground wire should be wired to the 12 o clock position terminal on the Pollak...
    view full answer...
  • Horse Trailer Brakes Lock Up When Connected to 1999 Ford F-250
    It sounds like either the trailer side connector is not pinned to match the vehicle side connector or there is a short circuit (possibly due to corrosion on the pin or inside the trailer connectors) causing the brakes on the trailer to lock up. The easiest thing to check first is for dirt/corrosion on the pins and inside each of the trailer connectors. Then you can make sure that the trailer side connector is wired up to work properly with the vehicle side connector. I have included a...
    view full answer...
    Image 1 for
  • Troubleshooting Trailer Brakes that Lock Up When Connected to Trailer Wiring
    This is a fairly common problem for trailer setups that use 6-way connectors like the # PK11604 that you referenced. The issue is that there is two accepted ways the connector can be wired up. The only difference between the two setup is that the brake output circuit and the 12 volt accessory circuits are swapped. It sounds like your vehicle is wired one way and the trailer is wired the other way. What you will need to do is swap the two circuits on either the trailer or the truck. It...
    view full answer...
    Image 1 for
  • Running Lights on Trailer Stay On All the Time
    This sounds like the problem could be a short or possibly ground related but based on what you have said a ground is much less likely. Look for any pinched or frayed wires on the trailer and fix as needed. This could cause a short resulting in constant power draw. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light. Make sure that the vehicle side and trailer side...
    view full answer...
  • Reading 12-Volts on 6-way Connector of Kaufman Tilt Bed Trailer
    Do you mean that you're using a circuit tester on your 6-way connector on the trailer (not the truck) and you're reading 12 volts on one of the pins? The only way that would happen would be if you had a battery mounted on the trailer. Typically, the battery is connected to the 12-volt supply circuit off the 6-way to receive a maintenance charge.
    view full answer...
    Image 1 for
  • Why Do the Brakes of My Gooseneck Trailer Lock Up When 6-Way Adapter is Connected
    The problem you are experiencing is due to the fact that there are two different ways 6-way trailer connectors are wired. The only difference between the two is that the brake output circuit and the 12 volt power circuit are swapped. So basically what is happening is that the 12 volt power circuit of your truck is sending voltage to the brake output circuit of your trailer which is locking them up. What you need to do is swap the wire going to the center pin of the 6-way adapter with...
    view full answer...
    Image 1 for
  • Troubleshooting 12 Volt Accessory Circuit Not Functioning After 6-Way Connector Install
    It is possible that you shorted out the 12 volt trailer wiring circuit of your truck while you were wiring in the connector. Since this circuit would have voltage all the time it would be pretty easy to short it out while wiring up a new connector. Check the fuse box for the 12 volt accessory trailer circuit relay/fuse and replace as needed.
    view full answer...
  • What are the Functions of the Wires on a Gooseneck Trailer with 7 Wires
    There isn't a standard for trailer wiring color but the likely functions of those wires are red for left turn/brake lights, yellow for reverse lights, brown for right turn and brake lights, green for running lights, black for 12 volt power, blue for output to trailer brakes, and white for ground. On the trailer side you could either trace each wire back to determine the function of each or you could use a separate 12 volt battery and connect each wire, one at a time, to the positive terminal...
    view full answer...
  • What Function is Carried on Center Pin of 6-Way Round Trailer Connectors
    A 6-way round-pin trailer plug like Pollak # PK11604 has a center pin that can be wired in two ways. The most common function to be found on that center pin is 12V trailer power. This is a low-level maintenance charge that will maintain a charged trailer battery while you're driving. In other applications this center pin will carry the trailer brake signal from the brake controller mounted in the tow vehicle. Please refer to the linked photo that shows both inside and outside views of...
    view full answer...
    Image 1 for
  • Troubleshooting Trailer Brakes on Horse Trailer with 6-Way that Lock Up
    What you need to do is swap the center pin and the pin in the 2:00 position of your horse trailer's 6-way and the problem will go away. The reason this is happening is that for some reason there are two different ways people wire up 6-ways and the only difference is the brake output and 12 volt accessory circuit pins are swapped. If you cut the two wires and then splice to the other pin it will work just fine.
    view full answer...
    Image 1 for
  • Solution for Trailer Connector that Has No Ground Wire
    Sounds like your trailer wiring does not have a ground circuit for it's connector. The easy solution for that is to run a wire from the ground pin of the connector to the trailer's frame. Your trailer electronics should work a little better now as previous to this it was grounding through the ball mount.
    view full answer...
  • Which Pin on Trailer 6-Way Carries 12 Volt Accessory Circuit
    The center pin of a 6-way does carry the 12 volt accessory circuit like you described. The brake controller output circuit would then be the pin in the 10:00 position like what you see in the diagram attached. You should note that in some cases these two circuits are switched and are opposite of the diagram. Since this is a pretty common issue that frustrates people and you asked specifically about those two circuits on a 6-way I figured it was worth mentioning.
    view full answer...
    Image 1 for
  • How to Determine Functions of Trailer 6-Way Wiring if All Wire Colors are Same
    You'll have to determine the functions of the wires and then wire them by function to the 6-way diagram I attached. Determining the functions of the wires can be done by you tracing the wires back to see where the terminate or you can put 12 volts on each wire to see what activates and go from there. You might use a piece of tape plus a marker to label each of the wires for the future.
    view full answer...
    Image 1 for
  • What are the Wire Functions on Electric Trailer Brakes
    On electric trailer brake magnets one wire is ground and the other wire is the power wire. It does not matter which is which because modern brake magnets are not polarity sensitive.
    view full answer...
  • Troubleshooting Right Tail Light on Trailer Staying On with Vehicle Turned Off
    It sounds like there is some kind of short on the right rear tail light circuit that is causing it to stay powered even with the vehicle turned off. I recommend simply tracing the wiring going into the right tail light all the up the trailer if possible, checking for any frayed or exposed sections that might be causing the short. There might also be a power bleed over from the 12V pin, which could be at the connection or inside the junction box. Also check to make sure the light assembly...
    view full answer...
  • Troubleshooting Trailer Blinker that Locks Up Trailer Brakes In Sync with Circuit Flashing
    What is happening is that the left blinker circuit is shorting out on the brake output circuit which is causing the brakes to apply in sync with the blinkers. I imagine the brakes are applying very harshly now too as the brake assemblies are getting a full 12 volts when the brake lights come on. Sounds like you have some wiring issues on the trailer that need to be addressed. Best bet is to go over all of the wiring looking for any cut or exposed wire and fix as necessary.
    view full answer...


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