Well ... two and plug? Can this thing go wrong? The connectors are well insulated and solid. Even with multiple installation they will still work. During installation you only need to attach the cable colorful cap and the rear part of the connector, the cable insulation at least. Pull 2-3mm and screw everything together. I have "dirty" prior to the screwing, the stripped end of the cable with very little solder. So I want to prevent the slipping of the cable from the connector. Most likely, it's just my (perhaps unnecessary) precaution. Connectors provide good contact with counterparts. After a long time nothing wobbles, the contact as the day is still present. Literally: It holds bombproof. Greetings! ChFo