Well, I surely am not in a position to comment on those terms you mentioned…
But, I will ask how your lights are wired. Are your lights wired directly to the battery using power and ground separate from the engine harness? The lights should not be sharing any of the engine harness circuitry. You could actually damage your coils by using the black wires in the engine harness for running light grounds. Isolate the light wiring from the engine harness, if it is not already and retest.
Finally, I would agree that the LED lights themselves might have something to do with this situation…