I am trying to wire a sony xplod deck to my 2001 altima and need to know which wires connect to each other and steps of doing that.

Hello charlieramir,

The wiring color code for the 2001 Altima can be found here. Your Sony deck should have come with a wiring harness and an installation sheet (or a page in the user manual) that shows the color and function of each wire. You simply match up the functions of each wire on the harness with the appropriate wire on your vehicle.

A simpler and more professional installation is achieved by using a vehicle-specific wiring harness that plug into your Altima's wiring. Such a wiring harness allows you to make all of the connections while seated at the dining room table or other well-lighted location instead of the limited space area behind the dash. The Scosche NN03B/NN03 seems to be the correct harness for your Altima.

Hope this helps.