How to splice wires - how to solder, how to crimp, wire connectors - YouTube
Should I crimp this stranded wire with ferrule before using the splice connector or just directly using the connector? (More details in comment) : r/AskElectronics
RS PRO | RS PRO Butt Wire Splice Connector, Tin 6 mm² | 119-182 | RS Components
IDEAL Splice Cap Copper Crimp Connector (50 per Box) 2011S - The Home Depot
B Type Gel Filled Wire Connectors - Silicone Telephone Alarm Wire Crimp Bean Splice for Low Voltage Application, Blue (1000 Pcs): Amazon.com: Industrial & Scientific