Conntek Heavy-Duty 7-Way Plug to ROJ

High quality wire and covering, nice connection too, very pleased with the quality. Great value

Very nice and sturdy with cable long enough to reach thru tongue to connections. Also the bigger gauge wires for the power & ground is a plus. Highly recommended

Wish I could give it 10 stars! It is super heavy duty. I replaced an old harness on a 16' flat trailer. The original harness was maybe 60% as thick as this. All the wiring in this is much lower gauge than my original. It barely fit in the trailers original holes through the frame (but fit fine with no harness damage pulling it in). where the original harness had considerable slack. I ordered the 25' version and had about 6 foot left over on my 16 foot trailer. All the wiring breaks out at the rear axle then my LED light set had its own 4 pin wiring to go on from there. This 25' harness ran just a few inches shy of the rear frame of my trailer leaving plenty of slack for the plug end to get to the truck. If you needed wires to go all the way back and then across to a rear tail light then this wouldn't get that far.it would reach the tail light on one side but you would need to extend the other tail light wire to reach the opposite side of the trailer. This LED light set had its own 4 pin harness: https://www.amazon.com/gp/product/B008CE0W5Y/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1 they are excellent lights as well.

I ordered this as a replacement for a damaged cord on my son's 16' cargo trailer. I heartily agree with the high number of other reviewers as to the ample sized wire and heavy duty outer rubber covering. I was aware of a potential problem with the wire color code for electric brakes (blue is generally universal) and as other reviewers have pointed out, Conntek decides to use the red wire instead. There is a lighter shade blue wire, but it is a lighter gauge and I believe this is the feed for reverse or backup lights on the trailer or if your trailer uses the "surge" style braking rather than traditional braking from the truck system or from the brake controller output. In that type system, current from the reverse switch can be used to "override" the surge system while actually backing the trailer.To save yourself some time, go ahead and tie the trailer brake wire to the red wire on this plug and you should be good to go. Because the male plug on the other end is moulded, you cannot verify what pole is wired to what color. Just so you know, all other colors are correct. All in all I am very pleased with this product and would not hesitate to order again if a need arises.

I like this harness, and it works well, but the wire colors are weird.I bought this to rewire a 16' flatbed car hauler with electric brakes. The factory wiring was junk, and I wanted to get something that would last. I feel like this harness is going to hold up well. The plug seems well made and fits tightly into the socket on my truck. The insulation on the harness is very thick and seems to be sturdy. The wires themselves are of the proper gauge and are also well insulated. My only gripe with this is that the color of the wires is not the same as any trailer harness I have ever seen before. I know that there is no universally accepted standard for wire colors, but these are more unusual than others. Left/Right/Tail are Yellow/Green/Brown as expected, Ground is White (not ideal, but not unusual), Brake is Red, Reverse is Blue, and Aux Power is Black. At a minimum I would have made Brake blue. This is not a big issue, but you have to take special care when wiring this harness to get everything connected right, and when troubleshooting, remember that the wire color at the front of the trailer might not match the back end.

I ordered this because of the molded plug/ wire combination. it included a detailed instruction sheet that had a color diagram for wires and plug and appeared to follow standard truck/ trailer colors and plug terminal locations. Piece a cake right ???? WRONG ! The colored wires do not follow truck/trailer standards or even the diagram instructions included. White wire was -Ground. Blue wire was +brakes. Yellow was reverse lights. Green was running lights. Brown was left turn. Black was +Battery. Red was right turn. I called the phone number that came with instructions, got a answering machine. Did receive a call back, and the person explained in broken English that there are lots of different "wire color and plug configurations out there". That's rubbish, we're in United States, where there is a standard. Nice cord and molded plug, but check colors!!!! Wired incorrectly could be very unsafe !

Arrived quickly, exactinf what ordered.

This is a excellent and easy to use heavy duty piece of elec equipment!

Used for a car hauler

It's a good quality cable to me. It's all match the colored with RV 7 pole standard------tested one by one. And, working very well.

Seems to be great quality. Wires were true to size and product worked as it should. Other reviews saying wired incorrectly but if you take 5 mins with a voltmeter to double check what wires are for what function it’s an easy install. Most of the time I find the trailer wire splice box has incorrectly labelled wires anyways.

Very good wiring BUT.....I've pulled wrenchs for 20 years. Worked on many trucks and trailers. Went to color code the wiring in the junction box to find out the color code I am aware of is completly different. Did some searching and found the is an RV color code wireing and then their is a north america standard color code. Just a little dissappointed. I could have changed it all up in my junction box but did not feel like doing that in case I hqve to repair something on the side of the road in the future. I ended up just cutting the molded plug off and replace it with another one and coded the wiring that I'm familure with. Just took me by surpise that after 20 years of wrenching and talking to my mechanics in the shop that we all never came across this. Removed 1 star just because it was not in the detail at time of purchase.

My husband is an Electrician and had me install the cord on my mothers trailer while he was at work- He inspected it when he got home and all was in great working order. I'm new to wiring but It was very straight forward to install and great value for money!