splice

Hi All, Has anyone managed a work around to create wire splices. Where say 3 wires from the left are crimped with one from the right? It can not be like two connectors as the splice has one refrence

As a learning exercise, I'm recreating this object. As you can see, I omitted a few ridges, threads, etc. from the left-hand side. Can I get in there and splice a few sketches and extrudes between existing features? Or do I have to start again? Thanks.