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There definitely is a way to do this, but I currently I cannot find anyone that knows how...
DoubleDip (Ultimate Conversion Wiring) is currently looking in to this one for me.
(Originally my reverse camera displayed its own guidelines, and the IQ unit just had the Text overlay at the top).
This is how my reverse camera display looked before.
I have yet to upload an image of how it looks now, but the reverse camera image has the IQ guidelines, and the cameras guidelines.
From what I have been told, Holden is not even aware of this option ????
View attachment 160154 2 annoying sets of guide lines.