i was testing the thing on the car today and i see that there is a 12v input wen ignition is on, there is 3pins on the sensor + 0 -, so does the output voltage come out of the 0pin and go too the coil? my meter isnt designed to check a pulsing voltage as quick as that so i couldnt get a reading off the middle pin (marked "0"), just wana see there is still a 12v input and output wen my car cuts out , dam thing didnt cut out today did it!