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Simple answer is Yes.

Aerpro make an adapter for the Nissan Diversity antenna plug, costs about $15 from Ebay, Supercrap or any Sound place like Alberts etc

Other options are cut off the Nissan...

As per prev posts, and...

To transfer fuel the Sub Tank Computer will monitor the following;
Engine running, Sub Tank pump connected, etc, and
"Main tank less than approx 75% full" which is an...

Just found a photo of when I was doing my stereo. This photo confirms it I believe.
http://www.nissanpatrol.com.au/forums/attachment.php?attachmentid=58869&stc=1

as TD said,
when you start up, it runs the transfer pump for about 20seconds or something, pumps about 100ml to keep it in working condition

once your main tank is below 2/3rds, if you hit the...

When you start the motor it will draw a small amout from the subtank. try to leave at least 5 litres in it to keep things lubricated.
when the main gets low hit the aux button and transfer over some...