No spark when cranking

Well the Choke switch and the choke thermostat check Ok so there must be something else pulling down the voltage in the Blue circuit.

The Blue wire does indeed go "DEAD" in start just as 67Dart273 said.

This is such a poor design and goes against everything taught about designing electrical circuits. You should never rely on voltage from another circuit (Brown in this case) to supply needed voltage to critical devices IE the ECU.

It is just down right stupid to take the normal 12 volts (Blue) running voltage and replace it with just ~6.9 volts during start. Especially when Chrysler decided that the coil needs 12 volts instead of the normal ~6.9 volts during start.

There must be something under the dash that is pulling down the Blue IGN2 voltage.

I think I am going to just put in a 12volt relay connected to the Yellow wire to give me the needed voltage for the Blue circuit or just rip out this crap and install a GM HEI setup.

Opinions?

Thanks