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When it comes to connecting your trailer to your vehicle securely, you want a socket that stands the test of time and weather. The Pollak 5-Pole, Round Pin Trailer Wiring Socket is crafted from chrome-plated, zinc die-cast material, ensuring a durable and corrosion-resistant connection. With concealed terminals, this socket not only provides a sleek look but also maximizes lifespan with its robust design.
No one likes voltage drop issues, which can hamper the performance of your trailer's electrical systems. This 5-pole socket is designed to ensure a minimal voltage drop thanks to its round, split brass pins. This feature keeps your connectivity strong and steady, making it ideal for consistent performance across trips.
Trailers face harsh conditions out on the road, from rain to dust. The Pollak socket features a dielectric grease coating to safeguard against corrosion and resistance. This means your electrical connections remain intact and reliable, no matter the environmental conditions.
The socket's 5-pole capability offers precise wiring for various trailer circuitry, perfect for custom setups where different electrical signals are necessary. You get the wire-insertion-style flexibility to set up connections like brake lights, auxiliary circuits, and more. Color-coded advisories (White - Ground Return, Red - Auxiliary Circuit, etc.) make the wiring intuitive and straightforward for all configurations.
Outdoor conditions can be harsh, but the spring-loaded lid on this socket acts as a guardian against moisture and dust entering the connection point. This simple yet effective feature ensures that your interior remains clean and clear, even after extended periods of exposure to the elements.
With a voltage rating of 12 to 24 volts and a current rating of 15 amps, this socket is built to supply a reliable and robust electrical connection. Whether you're powering up lights or other electrical systems in the trailer, rest assured, this socket provides consistent performance. Recommended wire gauge use is 14 to 16 gauge, which further solidifies its capability in delivery and durability.
Product arrived as shown.
Excellent productProduct performs as expected.
Exactly what I needed and these seem to be difficult to find. Thanks.
Katie, recieved the trailer plug as ordered. Excellent communicationduring the process, knew exactly where the thing was at every step of the way. I am impressed.
I am impressed with this company. When I placed my order I had instant communication until it was delivered which was quick too I might add. I just installed this in place of the 5 pin flat hookup I had for my boat trailer and I am very satisfied. I got tired of having to tie the connectors together and worry about them every trip I took. Thanks for good service and good products
ETrailer had the parts I couldn't locate, anywhere else, at a fair price. Shipping was reasonable and not another profit item as other companies. Shipment was received in two days. Last used for a trailer hitch for my GMC. Always a great company to do business with. Of course I recommend them for all your towing and truck needs.
Always Professional Help here at Etrail er...
!!!
as far as small 5 pin round plugs go, this one's better than others as the terminals are less likely to short against the housing like I've had before. I prefer the 5 flat myself but have two trailers for the bike both done this way, so I stayed with the round.
This product is poor design and quality is just not there , the wire holders in the back are so close together and tiny plus wire goes in at 90 degree . I read the reviews before I purchased it I thought it can’t be that bad , but I was wrong won’t be using it pollak used to be a good brand .
Hot garbage. Terrible design that I'm stuck with because my trailer tongue is drilled for this plug shape and dimensions. If you look at the pics, the screws are at the back of the wire connector so the wires must be inserted at a 90° angle to the plug. If you tighten too much, you'll start shearing off strands of your wire. I ended up spending a couple of hours soldering in my wires through the screw threads and it's still a shakey looking affair. If you're options allow for literally any other design, don't buy this thing.
I purchased the male 5 pin connector on my pull behind motorcycle trailer and the female on my 2008 Harley Davidson. They were the perfect purchase for my application.
Thank you.
Very quick service!
Great customer service.
I purchased both pieces and got the fifth that I was looking for for my motorcycle. I would recommend this for anyone wanting to wire the motorcycle to pull a trailer.
The only place that I was able to find the 5 pole round pin, everything is flat pin which made it difficult to locate. I'm very happy with my purchase!
Thank you
This item is very high quality and protects against weather conditions when not in use. When the female mate is connected, the protective cover on this unit provides a catch to prevent the connection from separating. This item will mount on the rear of my 2010 Honda Goldwing and provide an electrical interface from my Goldwing to my Bushtec trailer for running, brake, & turn lights, to include interior trailer lights. Keep up the good work etrailer!!
Marquis R. 
2/24/2015
Much better than expected as the finish on the connector is completely free of rust, discoloration, or other imperfections associated with open road use items.. Of course the connector is mounted is a area that is subjected to water, rocks, dust and dirt, however I have not had any problems visually or electrically since installation. Mating of the connectors are still snug with perfectly clean electrical contacts.
Nice product. Proper di-cast with chrome finish...not the cheapy plastic one this replaced. I prefer this to the flat-4 plug, because the flat-4 can't really be secured the the vehicle, and most of the time thay are run out the truck over the bumper. I didn't want to risk scuffing the painted bumper cover, plus I have a 3rd brake light on my trailer, which requires a dedicated brake light wire. I installed this on a 2006 WRX and a 1990 Mustang (1 trailer, 2 cars that tow it)
It's working very well.
Backup for the new plug I ordered.
Product came quickly and in good order. It was for the most part what I expected. the old one, however, had a plastic inner seal to protect the wires from touching the inside of the product. This one did not . It would be an improvement to have this feature. Total install not yet complete. Will see how it all works when it is all wired up.
Mike M.
8/28/2018
Got it working fine but have not used it for trips yet. Still have to test it on a trip
Appears to be very well constructed. Only thing that I think could be improved is that it doesn't have a waterproof cover on it. That is easy enough to remedy though by simply using some terminal grease on the contacts to protect them from the weather. I am not mounting this on a vehicle myself, I am building a box for testing trailer wiring and lights. I am trying to include as many of the different types of trailer connectors that are commonly seen on trailers in my area.
I've had the receptacle and plug version of this installed between a homemade truckbed trailer and my older toyota truck for several years and it works great, good connection, and easy to install. I went with the 5 conductors as all I needed were left/right signals, brake and running lights. I drive offroad a lot with the trailer without problems. I just received my second order, for an additional trailer, and the plug is really tight, thanks to the conductors being slightly too spread. I'll have to pinch the pins a bit to loosen the fit - easy enough. Otherwise it'd be 5 stars!
Quality made product that was easy to add to my motorcycle wiring. Works very well with the mating plug on my trailer. Very happy with price, delivery time, and simplicity.
I recently purchased a compact trailer to tow behind my touring motorcyle. I also wanted to be able to tow it behind my car. This 5 pin connector will allow me to do that. It is of good quality and was delivered quickly. It is a specialty item that I could not find locally. I would definitely purchase from etrailer again.
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Gwendolyn Y.
3/3/2025
Hey John. We are always here ready to help when you need us! A 5-round pin isn't too common these days. What kind of trailer do you have?