E78 connection to Uniden Oceanus D VHF-with DSC

Hi Ray Team. Please let me know if I am on the correct track. We just upgraded our nav to the e78, and ITS UTTERLY AMAZING. quick question. How can I connect the Uniden Oceanus D vhf to the e78? Do I need an R70414 cable? or is there another way to get the gps data to flow TO the Radio and the RECEIVED DSC CALL location to show on the e78?

Next- If we DO in fact need that cable, do we also need to apply power to this cable or will it get power from e78?

Thanks for the help.