Sorry for the delay, I have been busy the past few days. I can confirm, though, that all that was needed was the bypass. It has been working for a couple of days no without any issue. If this gets patched in the next firmware update, then I will tackle the grounding then.
Also, drenyce311, I am aware that the wire states "parking brake wire", but thank you for clearing that up for me. That is kind of you.