RSXt3

hey recently my timing belt went out and i bought a good y7 motor and y8 head, had y8 engine originally. only problem is i didnt realize the y7 block has one less sensor than the y8 block. it is a single red wire going to a round two-prong plug with only one prong in it. it is right above the coolant tube going from the thermostat to the coolant pump. can i run this car wiithout this sensor, i here of people doing this swap all the time what the hell do i do?