Sopoby500PCS Solder Seal Wire Connectors, Self Soldering Heat Shrink Butt Connector Solder Sleeve Waterproof Insulated Electrical Butt Splice Wire Terminals for Marine Automotive Boat Truck

Exactly the connections I needed , works perfectly, easy to use

Just finalized wiring my trailor with this product and I am very satisfied. The fact that the wires are melted together is very good. When purchasing the product I thought that I would probably have to put a shrink tube on top of this and I was right. The shrink tube does not resist the heat from a lighter and breaks down a little bit. So I just shrinked another tube on top of it. This combination make a very good wire joint.

I like these connectors so far. It takes just the right type of procedure to get them to work. What I have done is to strip (proper size wire) the wires about 1/12 inch and insert the wires from both ends until the wires touch the insulation on each other leaving them bare wires exactly in the middle. Twisting for me did 2 things I didn't like. In most instances, it made making close connections very hard to do, and the other thing is that twisting the wires also most time made the wires bundled that way a bit too large to safely and easily pull the connector over them. letting the wires either naturally slide past each other or into each other made for the best results. The next thing that is required is to get a good quality heat gun and hold it about1.5 to 2 inches ways and heat while moving it back and forth. Heat from at least 2 different angles and the solder will melt properly, the sealer will spread out and the casing will shrink properly and provide a hold that is very difficult to pull apart. I used probably close to 50 lbs. of force and could not pull wires apart. Let the connections cool a bit before moving them around. If you have more force than 50lbs on your wires you need to do something to relieve that stress. These are not for every type of connection or for every place a connection is needed, but given the proper space and type of wire, these work far more effectively than I expected them to.

Works perfect with a heat gun. Solder and heat shrink in one easy step

Large selection of sizes. I will use them in a boat rebuild.