I have done a lot of posts regarding the system. If I understand right. The ECFM supplies the ground for the relay. Also read where the wire that controls the exciter wire is part of the system. I really don't care about having an intake heater. I just need to stop the alarm from going off all the time and scaring. The driver. So any ideas. I had a Bluebird mechanic in here and he couldn't tell me anything