BTF-LIGHTING 4 Pin Electrical Connector 24AWG IP65 Male Female Connector 7.87in/20cm Extension Cable for Car,Truck,Boat,Indoor/Outdoor LED Strip Lights/String 15mm Nut Small Size 5 Pairs

neat product

Boat light perfect for that

Good news is they appear to be well manufactured and I can believe they will be waterproof I am presently testing them in freezing winter weather). I got the 4 pin small ones. What I don't like are design flaws: 1) the key which aligns the rotation is very hard to see and it doesn't stick out far beyond the pins so you can't just rotate the plug until the key engages. If you do you will bend the pin. 2) the O-ring which should be captured (but isn't) falls off if you are not careful and then it is not waterproof. At least it is orange and fairly easy to find in the dirt. 3) less serious is that the screw on connector cap between male and female is also not captured. Once you have soldered a wire onto the connector you won't lose it.After using these for 5 weeks I have upgraded my rating. All my previously stated shortcomings are still there but these guys survived 5 weeks exposed to 70 mph winds and subzero weather with sleet and snow. I have 80 connections and none went bad. Meanwhile external 4 conductor security wire got its insulation striped by the weather. I'd say these are a good buy and worth the minor shortcomings. For the alignment I just mark them the first time they are together with a metallic Sharpie.

I purchases these for a outdoor lighting project.I used them to connect eight LED strips back to a central connection point. They lock and seal well. The design is good and the product seems well made. The core wires are nice and easy to soder. The connection ends fit together sngly and twist tight.I would recommend taking the time to mark the connection notch on both ends. They are a bit hard to see and it will make your life easier when you go to connect them.All in all a good product that I would by again.

I have used these connectors for various projects and they work great. However, this time when I ordered, they were missing the lock nuts. I emailed the manufacture and the problem was resolved quickly - great customer service. Like with any connector, observe the maximum current and voltage ratings. Things that I like about these connectors are:* Copper wire (not CCA) good for electrical conductivity and the ends are tinned for easy soldering* Good construction* Available in different sizes and conductor count