I was working under the car replacing the coolant lines by the engine and noticed this unattached wire hanging down. I am getting ready to start work on the FI so the car has never started since I bought it and want to know what this wire by the oil filter goes to. It is a forest green wire similar in color to a wire to the starter with a brown plug cap. I could not see anything it would plug into. Can anyone send me in the right direction as to what it is? My car is a 85. Thanks in advance.