As promised, here is my 1 week-delayed mod: Self-installation of CFL HU Bypass cable.
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Removing the HU connectors was

Directly behind the connectors is the aircon vent housing. There is only ~2 inch gap in between them. I have to contort my body, hand & fingers to reach in, press the locking clip, and wiggle the connectors out.
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You can see this small gap more clearly. It actually feels smaller than it looks, had a hard time to pull out both the connectors.
Installing the bypass is simpler. Just connect the car HU connector into bypass sockets, then connect it to the HU. Do the inner one (Right) first b4 outer one (Left).
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Tidying up the cables with cable tie.
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My arm GG alredi, caused by the sharp edges inside the dashboard. You cant see it in this pic, but a bruise appeared a few hours later.
Overall: The bypass cable works and videos stayed ON throughout the drive. I would suggest removing HU to install this as its not easy to install, with the small gap behind the HU connectors and not able to see whats happening (I need to "feel" the connectors, and the locking clips).
Those cuts on the arm... reminds me when I did it too LOL. And I did it twice... first tiem one of the pins bent, then had to realign it and refit again. Pengsan hahaha. Done it back in 2014 June for wife's City, but now never use the video function only for the HDMI Waze.