Member Credit: rguerra7
The main parts needed are:
1. Navigation Display Screen (28090 CA100)
2. Display Control Unit (28330 ZC00A)
3. Navigation Unit (25915 CB804)
4. GPS antenna (I bought an aftermarket one that works)
5. Plugs that fit the back of these units (Just searched for Nissan plugs on eBay and bought what seemed to fit).
The Display Control Unit and Navigation Unit came off a 2005 Infiniti QX56. I didn’t buy any special wiring harness, but be prepared to wire 50-70 wires. Most of these wires are interconnected with the control units mentioned above, and only about 20 wires need to be connected to the car.
The schematic for the integrated display system is on page 70 and for the navigation system on page 111.Choose your year, then it’s under the “av.pdf”.
This should work for the 2004-2005 Maxima.

When I started connecting the wires to the car.



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