I have a cut in my negative wire exposing it and need to remove from the plastic harness (light harness)in order to repair. Ive tried using small screwdriver kit, a small nail and followed youtube video on how to do it. I slide it down as far it can go and put pressure downwards on the screwdriver so the tip of tool angles up and tried wigglin the wire and pin to pull out.I have no luck and know if I keep going at it Ill ruin the connection or mess up the plastic harness. Is their a specific tool to do the job right? Seems simple but its not going smoothly for me.