XUUAP400 PCS Solder Seal Butt Connectors 22-18 AWG, Waterproof Heat Shrink Wire Connectors, Solder Stick Electrical Terminals (Red)

I used these to wire in my slab lights. Make sure you have a good heat gun to ensure the solder melts and flows.

Strip the wires, insert, hold in position while you use a heat gun to warm the splice. the splice and your fingers will reach melting temperature, and bob's your uncle....so to speak. I made a jig, see photo, from two alligator clips and some heavy wire soldered in between, to hold the wires immobile. Solved the problem and my fingers will heal pretty soon.

I guess all of these sleeves have one side smaller diameter than the other, which sucks with a heavier jacket wire. I did notice these take a bit more heat to get the solder to flow but they still work great. This is about the best deal on Amazon for these.

They work, but using a heating gun is not an option. The solder requires high heat from a lighter

I discovered this particular product after having purchased similar products from different companies.Upon receiving the shipment, I immediately put it to the test. I soldered some wire that I did not want to be bulky at the connection point and it came out great. These particular connectors seem thicker than others I've purchased before which is a good thing because I've had connectors of the same type fall apart shortly after having heated them up.Overall, I'm pleased with the connectors and will order more when I run out!

Worked great, I used them to install cameras in a fleet companies trucks.

They work good, takes a little more heat to get solder to melt So they ok

I’m rewiring a large Z gauge layout and these are great to replace those darn little Marklin plugs. Easy to use and you get a great permanent connection.