SUPERNIGHT10 PCS 4 Pin LED Connector for Non-Waterproof 10mm RGB 5050 LED Strip Lights, Strip to Wire Quick Connection Without Stripping, Include UL Listed 16.4ft 22 Gauge 4 Conductor Extension Cable

Every single one worked as it should. Just take your time and have good lighting. Be sure to open the lid on the light strip side 90 degrees before inserting the light strip in. Also remove the adhesive tape from the back of the light strip. I forgot on one connection but it still worked. On the wire side be sure the wires are laying in the brass grooves properly before you snap it together. I had one wire that didn't and it caused one color to not light. I could see through the cap that one wire wasn't laying right. I just unsnapped the lid and moved the wire and re snapped the lid. Works great.

I should have listened to the other reviews. These just to not work. As per typical Chinese junk, the wire is way to small to actually work, and the strip side won't go through LED strips. So, total junk.

These connectors are no good for the typical led strip lights. The strip lights are too thin to be held in place and make contact in the connector. I had to add a piece of cardboard to the end of the strip light so that the connector would penetrate the strip and hold it in place. The connector also does not penetrate the wire that comes in the kit. I only had to make four connections. I’ll throw the rest of these away and purchase a different set for next time. For the $16 I paid for this set, it isn’t worth returning them. I don’t suggest anyone buy this set.

One out of ten may partially work. The connector has 4 thin metal pieces, each piece connect the light string in one end and wire at the other end. These metal piece is paper thin and sharp pointed at each end. The end that connects to the light string copper contact sometimes cannot penetrate the covering clear silicon less chance to go through the copper to make the contact. The end that connects to the wire is better but barely. If first time the punch does not go through all 4 x 2 sides, it means the pointed metal is bent, you have to throw the connector and use a new one. Many times, only three wires connect, one is not, you then will have to thrown that connector away and try again. Besides the paper thin metal pieces that tend to bend, the plastic cover is not good neither. Once it is snapped in and you have to reopen it to retry, forget it, the plastic cover will not snap in again. I made 2 success connection out of 20. Save your money, avoid frustration and failed projects, it's not worth buying and using these connectors.

I’ve seen some people having trouble with these so this is what worked for me. I’m using these for back of my tv so I needed 4 separate strips connected to each other. These are water proof strips that have silicone coating and these are the connectors that seemed to be the right ones. The easiest way I found was to cut the strips. Taken1 strip peel back the paper backing open the connector all the way to 90 degrees and insert the strip into the connector. Make sure it’s going into the side of the connector that’s rounded. Next I cut small strips of the 4 wire. I found that it’s easier to get these wires into the connector by separating them around 2 inches then again open the connector 90 degrees. One unthe wires and close. This part was hard as I didn’t want to use a plier to close the connector and risk breaking it so I used my fingers but the trick is up make sure it’s totally closed and you should hear a small click when it’s closed. After that should be good to repeat and connect next strip. Took me awhile to get it right and wish there was an easy way to reopen the connectors to check the connection. Otherwise worked great.

Quality connectors .. however I had issues with the 10mm led strip not making consistent contact with internal prongs on the clip. For those having problems with this, separate and cut back the top silicon material (about 1mm) and fold down the contacts strip (about 2mm) as the they are facing the prongs of the connector before inserting the strip into the connector. This will ensure that the contacts make proper contact with the led strip. The simple cut strip and insert did not work for me. Might depend on the LED strip used

I was hoping this would allow me to connect LED lights above my kitchen cabinets to a section under the cabinets. I had 3 wires to make. After running the wire through my cabinets I attempted to attach the connectors. You have to separate the 4 wires a little to line up with the slots in the connector and then you clamp them down. On the other end you attach the LED ribbon. I was using the indoor not waterproof version of the LED ribbon. It doesn't make a solid connection because it is expecting the ribbon to be thicker (the instruction say not to remove the silicon waterproof layer. Yes I removed the adhesive tape as the instructions said. I tried numerous things including adding a spacer in the ribbon side. I was able to get one of the 3 wires to work but only on blue. Once I switched colors nothing. It was probably just luck I got two wires to connect to get the blue. I thought this would be easier than soldering the wire to the LED ribbon but after 2 hours I gave up and just have lights above my cabinets. Maybe latter I will redo it and solder the connection. I was using a 10mm ribbon but a different brand, maybe if you don't mix brands these would work?

While I did not have any luck with corner connectors, these worked quite well. I added some led strip links under our kitchen cabinets, several different runs, so I needed to connect them into one power source. We learned some lessons but after getting the hang of them, it was pretty smooth sailing.How I did it... first my led strip lights has a very thick water proof coating and these connectors seemed to be made for them with the arched top. So I left the rubberish coat in tact. We also separated each of the four wires, which also seems to be required for these connectors. Then just make sure the wire is seated fully and you really clamp the connector down, used piers to make sure.Can't say they will work for every one, but they worked for us. Three strips all connected together and controlled by an amazon smart plug.