Ok so i was planning on running my EMS with the nissan sr20 cam wheel. Im running a 1993 harness, Well today i opened the cam sensor to put the wheel in and its not a optical sensor. So can i use a optical sensor with the 1993 harness? I have someone making a harness for me out of the 1993 to put in my festiva, so i dont think adding it should be a issue, but what will i need? sensor and pig tail?