Review on HIRALIY Waterproof Electrical Connectors Kit - 120 Pcs For Marine, Automotive, And Motorcycle Wiring With Heat Shrink Butt Connectors And Solder Seal Wire Connectors by Evan Burnside

35 years of solder and wiring knowledge and unable to get a single solder butt connector to work from this kit. Even with my programmable top end heat gun, every temp setting from 450F - 850F would ALWAYS melt the plastic before the solder flows.The crimp connectors in the kit are fantastic. The supposed self-soldering ones are absolute FAIL with $250 heat gun, $25 Top Flite shrink gun and a variety of other torches and hours of wasted time. not a single solder connector worked for me. All they did is PLASTIC MELT!Bring a torch near them like in the photos for these, the plastic shrink will melt long before a drop of solder would ever flow. Even when JUST ABOVE solder melt temp (450-500F) the PLASTIC STILL MELTS OFF.