sleis

I have a quick question. I ran everything last night and have the camera installed and harness run all the way up to the front. When I followed the directions in the pdf, they have you put the 3 wires into the 22 pin connector. I have the existing connector on mine and the slots they have listed are all occupied. Did you run into this? I am wondering if I should pull the existing pins and isolate them, or join the new ones with the existing conductors. Thanks!