When I was underneath my dash today I saw a connecter that was unplugged, so being the curious person I am I connected it. When I went to drive my car again the CEL came on. I disconnected the cable I had connected and the CEL turned off again. I have an up-pipe, and the EGT sensor is not there anymore. However there is a resistor there. Is there a certain amount of Ohms the resistor needs to be? Im attaching a pic of the connector, if you know what it goes to please speak up. The connector is the two green pieces in the picture (shown disconnected).