I need help
looking for the 4 location to the abs sensor on my car my abs sensor is on so instead of changing one decided to change all 4 just need help

 

They're mounted to each hub assembly with one 10 or 12 mm bolt. Pull the wheel and look for the thick black wire coming from the car to the hub. That will lead you right to it. Undo the bolt and wiggle the sensor out.

 

Get yourself a copy of the FSM (Factory Service Manual). You can download it from here http://www.nicoclub.com/FSM/Maxima/ . BTW, you'll need all sections.
The FSM will tell you not only where the various parts are located, but it will also tell you how to fix the most common problems.

 

they are bolted right behind the splash brake dust shield. Not hard to find.