bypassing ballast with stock ignition module

Just look at the 5 pin (top) diagram. The "U" is at the bottom of the resistor. The top two pins of the resistor are hooked together and go off to switched 12V "run."

The bottom left terminal is coming off the section for the 5 pin ECU. THAT WIRE (far left) goes down to feed the corresponding pin of the ECU

So far as I know IF you have a 5 pin ECU, that cannot be eliminated. The box is designed to run off that power

The 4 pin boxes are powered internally by a direct 12V feed same as the second 12V wire in the 5 pin, IE the wire coming off of far top right, going straight down the page to the box.