EDIT: Wait, you are saying check on the OTHER side of the coil for power? The yellow wire is attached to a terminal along with the pink/black wire and cannot be separated without damaging the harness.
Check the POLARITY of the voltage at the coil with a good DMM with the key ON and the key OFF but with the lights on. I suspect that the polarity will be reversed and the voltage relatively low with the key off but the lights on.
