that could work as mostly all vectra cid's use the same eprom, 93c66
You would obviously need to 'pair' the display to your radio/uhp4 again so make sure you have the code for yours and that the file you put onto the display is actually tech2 clear.
the very late displays were the 3line type with a different eprom/file size...
The eproms are not locked to the display itself so is safe to put another one on...
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