I have a 2003 Nissan Altima SE 3.5L and it keeps stalling out. The car keeps losing power while car is in motion but the engine never cuts off. I replaced the alt power cable and the starter xable and the battery. But the problem persists. I am now noticing the what ever the problem is it is draining the battery. I am needing the pin out of all the fuse boxes on a 2003 Nissan Altima SE 3.5L Manual transmission.

Hi Sirflex01 and welcome to NICO Club!

You might want to get your hands on an OBD2 scanner and see if your car has any diagnostic codes to deal with. I suspect you may have some pending or recorded. Do you have a check engine light illuminated?

For your pinouts, get the FSM and look to the EC chapter. We have a lot of that available on our website. The FWD is the foreward chapter and will have a table of contents, each chapter is a separate link on the following page. Here's a link to get started:
http://www.nicoclub.com/FSM/Altima/2003%20Altima/

Ihave a 2005 altima 2.5 and i had that problem.. I replaced the Camshaft Position Sensor and it fixed my situation.