I am in the final stages of wiring the aircraft. On the Slick Mag's, there is a lower bung that can be removed to install a Westach 303D2HT sensor. It is almost impossible to reach and remove the bung to remove and install the sensor without removing the mag. I remember so discussion about sensing the RPM from the "P" Lead.. Any suggestions would be appreciated. The electrical system is 12 volts.

Giff Marr
LIV-P N229GM 90+