Thats not crimping wires, Never use duct tape in place of electrical tape by the way. Crimping wires is using crimps to join them. Thats how it should be done, not just taping them together, youll end up losing something in a couple weeks if you do that. And im confused, did you cut out the factory audio connector? If so, you might be screwed. the wire colors correspond between wire harness and head unit, not factory radio and head unit