Review on Qibaok Waterproof Electrical Automotive Connectors for Durable and Secure Connections by Leon Johnsson

Soldering is much better than crimping, but that only counts if you're really good at soldering. For the rest of us newbies, crimping connectors is very easy. All you need is a wire stripper, a crimping tool and a lighter.1. Use wire cutters to remove the sheath to expose the wire.2. Insert the wire into the body of the cylindrical plug 3. Crimp with a tool 4. Shrink with a lighter There are a couple of minuses. The connection is not as secure as if it had been properly soldered. If the first crimp is not done correctly, the metal connector will simply break into pieces when you try again. So if you don't succeed the first time, just throw it away and use a new bullet connector.