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Quick Fix 4-Pole Flat Trailer End Only
California residents: click here
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today we're going to review part number HMC20031. This is the Hopkins Quick Fix 4-way flat trailer end connector. Now this is used if you happen to have a damaged 4-wire flat on your trailer and you need to replace it, or if you just have some pigtail wires and you want to put a 4-way plug on the end, you can use this part for that. Basically what you would end up doing there when you just put your wires right in here. Lay the bare part of the wire right into the connector, and then take your cover plate, once all the wires are in. Just go ahead and put this in, and then push it all the way down and it will actually lock into place. It protects your connections, so there's no external splices. Basically just to give you an idea, I have a sample here.
You can see: here's your normal four wires you'll see on a 4-way flat. You've got your white, brown, yellow, and green. Basically on your trailer, if you have a damaged connector, you cut it off. You have these wires, or if you just have the wires and you need a 4-way, basically what you would do .. and what also helps you out is on this 4-way, it's actually marked.
It says "RT" for right turn. "LT" for left turn. "TM" for the tail lights, and then "GD" for ground. Basically it shows you where the wires. Now normally on a 4-way, you have this normal color combination here, but what I would recommend to do is actually probably put power to each circuit to make sure and verify. Just don't always go by the colors.
It's always good to test the circuit to make sure it lights up the correct circuit you're going to install in here. Basically all you'd end up doing is taking you're . Like, in this case, it says right turn . Your white is the ground. Brown is the tail lights. Your yellow is your left brake and turn signal.
And your green is your right turn and brake signal. You'll see the end one says right turn, so we take our right turn, which is the green. You just lay the wire in there and then you take the exposed portion and you actually push it down and it will actually clip in there and hold into place really tight. Then once you get all four put in there, again, you just put this on there, push it into place and you'll be ready to go. But that should do it for the review on part number HMC20031. This is the Hopkins Quick Fix 4-way flat trailer end connector. .
Delivered quickly. Answers to questions were prompt. Works great!
Worked well. Had a little trouble with two wires in one slot. I was able to get the job done.
This is an early impression; the Quick Fix 4-prong device has not been exposed to time and weather yet. Despite it's name, the device strikes me as tough plastic with three substantial metal prongs, certainly as heavy or heavier than the original, swaged on male, trailer wire connector. Perhaps like other people, my original, three prong male- one prong female (for ground) came from the factory with 5 wires. The Quick Fix has labeled slots for 4 wires, so the white ground; brown tail light; green right turn signal and yellow left turn signal were easy enough to place. The dilemma for me was wear to place the 5th wire, brown and green on my harness. I hooked up the other four, tried it, and found that everything worked except the right tail light. So I "wish-boned" the brown and brown-green wires both into the labeled slot for tail lights (TM) and then everything worked.
The metal pins do not quite capture the wire completely enough. The v groves could be a little more narrow at the bottom so as to capture and hold the wires so you can clip the hold down in place without the wires not seating and coming out. Took more than a couple times to get all 4 wires on correctly.
It works well.
Product was exactly what was needed. Much better than dealing with multiple wire nuts. If you can replace an extension cord plug, why not a trailer plug? Why are these things not in the big box stores? Was surprised the product was as hard to find as it was (google searching).
This is the first time I've used this particular product manufacturer. In the past I used a similar trailer end from Reese. Installation was easy other than ensuring that all four wires were properly aligned with the forked terminals. I used a hammer to lightly tap the cover in place, and ensured the "clips" on the ends of the cover were securely in place. Time will tell if the "clips" will stay secured. Reese uses two small screws to keep the cover in place. Thanks eTrailer!
Disappointed in the flat purchased and the service received to solve the issue. Neither worked for me.
This product was super-helpful and reliable for connecting our microlite trailer with a campsite's electrical hookup. :)
Well I received only the larger of the two parts and it was loose in the envelope with absolutely no packaging making this product worthless. I spoke with etrailer customer service and they are sending out a replacement product.
Good product. Great shipping
Only one of four wires penetrated the copper wiring thru the sleeve when the cover was installed. Sure, you can remove the cover & wiring and cut a slit where the wires were intended to pierce, but, that defeats the whole purpose of just slipping the wire into each corresponding section and having the cover push down the wires to get pierced.
Good concept; it just didn't work. I gave up on crimp connectors and these press in connectors and learned how to soldier.
I love these things, Im a contractor and a sports men. I am changing all my trailers to these and keeping some around for the ease of quick repair
This product perfectly suited my needs. Also it was a very easy to connect the wires from an existing harness to this connector. I had it assembled in less than 5 minutes
The connector worked as hoped. I usually stay away from the quick-connect type wire connectors but this one worked first time and was extremely easy to install. Good quality connector.
Quick, easy, affordable. Perfect replac ement.
Darren
5/10/2020
Trouble free solution.
The service rep was terrific. She analyzed the alternatives and made helpful add-on recommendations without any pushy "up selling."
etrailer comes through once again!
The trailer wire end worked better than I hoped it would.The folks at e-trailor are greatly order was shipped within an hour after I ordered it and got here reasonably fast!
Bam! It was here in no time and just what I ordered.
Thank you, Mike
connector would not allow a 5 strand hook up.(wishbone set-up). Broke fairly easily..
The only problem was the body of the unit was extremely flexible and flimsy. Although it worked for it's designed purpose, it didn't seem at all durable and at best, seemed to be a temporary measure.
Easy to install, have some channel lock plaids to lock top piece in.
worked great. easy installation
Great product, fast shipping
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Nick S.
9/15/2025
I am sorry to hear about the issues you have been having with this part. I will have someone on our Customer Service team reach out to help resolve those issues.