Hay everyone new here but not to alpine. I do have a few questions if anyone can help on some insight. I've got a 7347 and need to know whats needed to test this unit out as it has just two 8pin din and they are not labeled. Can't find anything about them just videos of the display operating. Please any info.

 

Those are nice decks,got one. Only way is to power up through the din plug, It gets its power from eq and or amps or both.