350 Pcs Solder Seal Wire Connectors Heat Shrink Butt Connectors Kit Marine Waterproof Wiring Electrical Cable Splice Terminals for Boat Automotive RV Trailer

I normally don't write reviews. However I have wasted a lot of time effort and money on trying to find a good Marine wire connector. These have been on my boat trailer for this will be the third season. It goes in the saltwater almost weekly I bring it home and just hit it with the garden hose in the back around the lights I'm only replacing because I broke a light off and when I uncovered the wire loom and looked at the butt connectors they're just as good as the day I installed them. No corrosion on the connection portion nor is there any corrosion on The Wire outside of the connector. I highly recommend these for anyone submerging wiring into water

They work as they are advertised. No complaints, will continue to use in the future.

These seem pretty good, but I found that soldering first creates a much stronger mechanical connection. I used a soldering iron to tin the ends, then soldered them together. No twisting the wires. Then I slid and centered the connector over the joint and used a heat gun to shrink each end of the connector. I found that shrinking the connector ends first, then applying heat to the middle worked best. By soldering first, the joint was mechanically very strong. Without soldering, the joint could be pulled apart with very little effort. The connector comes with some type of low melting point metal that will create good electrical contact, but it does not seem to mechanically bond to copper conductors.As far as whether these are waterproof, we'll see. They seem like they will work well in wet applications, but until I see how they perform over time, I'll reserve judgement. I will be using these to connect sprinkler system control valves to the control wires. One of my control valve boxes almost always has standing water, so it will be a good test.

Yup. Buy em

Done correctly these splices work awesome. Not 1 issue.

Worked!

Haven’t used it yet.

good item not garbage , item was heavy duty bought several times