Review on FSJEE 2Pin 8MM LED Connector Kit - Includes 32.8ft Extension Cable, 8mm DC Adapter Cable, and Gapless Connectors for 3528/2835 LED Strip by Aaron Leburu

Although this seems to solve the problem of extending if you want your light to go from point A to point B with the same power supply, I think it's too big a problem. I used an extension cord from that kit and that was it. Plastic connectors are a frustrating problem and I don't have time for that. Just opening a small plastic box will drive you crazy. Maybe you could stick a plastic guitar picture in that tiny slot to open it? I ended up using my 8.00 soldering iron to connect the wires from the strip to the extension back to the next strip. Works as it should, two minutes and you're done and your connection will never short, break or fall apart (if you know how to solder). There are several different connectors in the package, so that's a plus. I am posting a photo of my finished work, which I managed to do thanks to the extension cord. I managed to route the cable from the bottom of the cabinet up into the cabinet so I now have top and bottom cabinet lights.