100pcs Solder Seal Wire Connectors | Waterproof Insulated Heat Shrink Solder Electrical Terminals | for Automotive, Marine, Trailer Wiring Repair | No-Crimp Splice, Red 22-18 AWG

They work great with a lighter and better with a torch.

I've been using these for a few years with Christmas lightning (outside & in the snow). These work really well and are much more convenient and easy to work with over traditional soldering and shrink wrap. I will say that I have noticed they do seem to have an unused shelf life. I've found that some of the unused sleeves, if I try to use them a year later, the solder won't melt. That's not a huge issue as I typically just buy up several prior to the season and they work well.

I was looking for some wire-to-wire connectors, which these do just fine for, but I actually found them to be very useful for RGB LED (4-pin 5mm) bulbs. Bezels for these bulbs will come with 2-leg mounts, so you're really left on your own if you want an RGB LED in a bezel mount. Anyway, these solder seals are perfect for them - the legs extend out past beyond the center soldering point, which makes things very easy. I'm using the 22-18ga seals, and while they grip well enough for a solid, professional looking connection, you may want to use the smaller size if you intend on doing pin-pin / pin-wire connections.

I bought these for some wiring projects in my SUV. I was a bit hesitant at first after reading some of the reviews on here, but once I got them I found they were very easy to use with my heat gun. The biggest key is to not use the highest heat setting, and you will see the tubing shrink down, and the solder will start to melt soon after. If you are seeing the tubing melting, you have your heat too high! I'm planning on using these to replace some of my other connections that aren't as stable. Highly recommend these!

I used them to install slab lights. If your heat gun is not hot enough the solder will not melt and flow.

These work well for butting together wiring harnesses for a car stereo. It might take a little more time than crimping them together, but the result is a nice professional look and they give the wires a very tight bond. The first one I did came apart when I pulled on the two wires, but on my second attempt I heated the soldering ring longer, thus it shrunk down more on the wires and now when I pull on the wires it doesn't pull apart. Success!

Love these when I heat them properly. Sometimes I heat them a bit too much and the shrink coating melts. Just be careful with applied heat and they work like a champ.

Up to this point I have always used crimp connectors. Those work fine unless it's in a tight space where getting a crimper in to do its work is nigh on impossible. And then there's the issue of having to preinstall heat shrink tubing on them, which is also difficult sometimes. These solve both problems. Just slide the connector onto one wire, put the stripped ends of the two wires together, slide the connector onto the joint so the solder ring inside in over the joined ends, fire up the heat gun and shrink the ends, and then hit the solder ring until it melts and flows, and it's done, but do be sure to give the connection about 30 seconds or so to cool before tugging on it, or it'll pull apart.

Fast easy to use...I have used hundreds of these for automotive, agriculture, and o quads... and the boat trailer lights... solder melts easy when using heat fun.. I have never burnt a connection yet or a failed connectionafter use.. .. knock on wood..

Connectors work great they melt nice and seal well

These are a must if your are connecting wires. Heat up till solder melts.

These connectors combine solder joint connection with insulation and water resistance in one. Needs only a blow dryer to activate.

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