Originally Posted By John_Kunkel
Installing a diode between the IGN1 and IGN2 circuits is the simplest way to get a constant key on source. The preferred diode seems to be an IN9004.


The diode should work as shown above.
On my FiTech, I tied both start and run wires together and that supplies the run power to both the FiTech unit and the MSD 6al ignition box.