Da Vinci 1.0a extruder replacement

Hey guys, my extruder on my Da Vinci was not heating up and I tried a lot of things to get it to work. For instance I heard that the connectors could fail, so I cut them out and soldered the wires together, and this worked for a while, but then failed again, so I just got a replacement extruder. All looked well and good until I saw the new heating wire couldn't connect to the motherboard, the new connector was smaller than the default one, I don't know if I'm just crazy stupid and can't get it to fit, or if I need a new or updated heating wire. Thanks for the help.