Moved to it's own thread to get better visibility.
Ben, where are you located? I ask because this may help in assisting you. My best guess is you have an electrical short somewhere in your system. I really don't see how the coil pack can impact the head lights.
Ben, where are you located? I ask because this may help in assisting you. My best guess is you have an electrical short somewhere in your system. I really don't see how the coil pack can impact the head lights.