1. Using the Wrong Size Butt Connector One of the most frequent mistakes is using a butt connector that is too small or too large for the wires being joined. Using a connector that is too small can result in a loose connection, while using one that is too large can make it difficult to crimp properly. Always choose a butt connector that is sized appropriately for the wire gauge you a... https://www.cabletiesunlimited.com/blogs/learn/10-common-mistakes-to-avoid-when-using-butt-connectors-for-wires?_pos=47&_sid=e68646666&_ss=r