What are these un-used connectors for?

[Nabeel]

I have a 2011 24SLi that bought at auction. It came off of rental and the stereo was removed. My goal is to install a new stereo -- a Sony head unit. Looking under the console, I see three unused connectors. I am wondering whether one of these will simplify connecting the new head unit. (I have submitted a request for the boat schematic to BenningtonMarine.com).

Thank you for any tips to make my task easier.

3x4 connector
1x2 and 1x4 connectors

PS: My Sony head unit has a 16 pin connector.

 

[Nabeel]

Pictures attached.

 

[Jack M]

There are many unused connectors under the helm . Their use depends on the options and the model line .
Since you have already contacted Bennington , if have you provided them with your Hull ID they should be able to help with the connector information.

 

[Nabeel]

Thank you. Good to know. (Yes, I did provide the hull ID.)