I just investigated this one in detail - you want NO part of it. I even had the donor car in front of me to do as I wished - it is a can of worms. You have to mess with the wiring harness in the dash going down to under the passenger seat...it's not worth the headache. Even if you get it running, you still have - in the case of 2004-2007 Quests - a dated Nav system. I would go aftermarket if you have to have one..
(On a hilarious sidenote, Nissan thinks this system is still worth over $3.5K to replace from the dealers

)