Yes, you have it right.The computer program line you have 'spare' to control 'Group A' and 'Group B' banks of 8 Displays, can you select it +12V or 0V.?
ie: +12V = say Group A and 0V = Group B.
Is this what you mean.?
Correct.Group A is 8 remote displays and Group B is the other 8 remote displays.
Thanks
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