If you’re looking for an alternative to crimp-type connectors, check out these Posi-Lock in-line connectors. You don’t need any crimping tools, and the connectors are rated for 600V using stranded AC or DC wires.
Just strip the end of the wire, insert it into the connector end, and screw the end onto the connector body. The center of the connector contains a brass conductor that the wire presses against to complete the connection.
Made by Swenco, these reusable connectors start at $10 per package, and they’re available online and in stores. If you like these, Posi-Lock also offers tap, watertight, and twist connectors.