CHINLY 10pairs 4Core 4pin BLACK Pigtail Plastics waterproof IP65 LED Connector Male Female for 3528 5050 LED Strip Light, Applicable 20AWG 0.5mm² 22mm Nut

Of course, the wires on pre-made pigtails are never the right length and it's a DIY install, but the construction is solid with good connections and the inner wire insulation colors are vivid and easy to sort out. I have not tested them with a firehose but the seals look good (will be waaaay better than the OEM unsealed pin connectors on this 1996 Suzuki).

You get what you pay for. Flimsy plastic causes connection ends to bend out of shape making connections difficult.

These are junk! I wanted connectors that were as unobtrusive as possible for the permanent outdoor led lighting I put up before the holidays and these seemed like a pretty good option, and they are "supposedly" waterproof (IP65). After spending many hours adding these to my lights, being very careful to use hot glue and glue lined heat shrink on the soldered ends, I put up the lights and held my breath. After less than two weeks outside, with only moderate moisture exposure, these things are all collecting water at the connectors, corroding the connections, and causing all kinds of random issues with my lights. I know for a fact it's these connectors because, as a test, I installed some waterproof automotive connectors and haven't had a single problem with those. Don't waste your time and money on these.