Full batt volt on both sides of coil, but if I hit the wire at ecu connecter that is connected to negative side of coil, it only registers like .56 volts, but coil side is over 12 volts.
I have a few of questions about this statement. You may have answered these already so bear with me.
What is the voltage at the battery (volt meter + to batt+ and volt meter - to battery -)?
With all the wires connected and the key in the run position . With the meter - connected to the battery - what is the voltage at the coil positive and coil negitive (there should only be one wire on the coil negitive)?
With the ignition module unplugged and the key in the run position. What is the voltage at the coil positive and the coil negitive?
With the key in the run position and the ignition module unplugged. By hand, trace the wire on the negitive side of the coil to the unplugged end of the ignition module plug (there should be no other wires connected to this wire). What is the voltage at the unplugged end of the ignition module plug?