https://www.blog.google/technology/safety-security/project-strobe/

I have not worked with this newer version, but it should be pretty much the same.
Here’s the manual for 4000 series with detailed install instructions: https://www.pioneerelectronics.com/StaticFiles/Manuals/Car/AVH-4000NEX_OwnersManual011714.pdf
And here’s a video of 4100 installation: https://www.youtube.com/watch?v=iCGn1DC938Y

Do you know if this radio has similar installation process to the orginal stereo you wrote about.

Hi Simon, I believe the radio in this post is now discontinued. I would discourage you from getting it now even if it was sold by some third parties as it is quite old and you know how it is with technology 🙂

Having said that, I recommend the following comparable radio with support for both Apple Carplay and Android Auto, which would offer a lot more bells and whistles and got very good reviews.

http://amzn.to/1L5KuNH

I dont think I used any code.. on initial start, I believe I kept the volume up control pressed and it auto programmed itself.

Do you remember the pin put for the steering wheel control its not making since to me

Yes, steering controls is optional.. It wasn’t even a standard feature on the altima then.

You can skip that if you do not want to control the stereo from steering wheel. The radio controls from the unit itself should work fine without it, however, you will also lose the trip computer ability from steering wheel control I think. The left side of your steering wheel controls will not function.

Hey is it necessary to get tbe steering column harness?i really dont want to use my sterring controls, will the radio work fine without it?

Hi Jesse, are you trying to install in an 05/06 altima as well? If so, is your current stereo the standard one or the upgraded BOSE one? this guide is for the std stereo with the stock steering wheel controls for vol, track, mode etc.,
Also, the steering wheel control adapter you bought, is it the same thing linked in this article above?

From as far as I can remember, I didn’t have any problem with the non-matching pins… Just use the links above in this article to see if you got the same hardware as I did.