It runs along the frame rail from the fuel tank to the intake manifold on the passengers side.
Under the passenger seat.
It's under the hood drivers side guard up close to firewall its black 2 plugs on it
Under the hood, on the passenger-side of the firewall, down low & just above the catalytic converter.
under dash drivers side
Located in the cargo area,Right hand side, under trim moulding, you,ll see three silver boxes, the 2 rearest most are the amplifiers
Under hood, passenger side, front side of shock tower, mounted in fuel line
It is under the passenger seat
you can purchase a repair manual for your vehicle from most auto parts stores, or try autozone.com and look under component location or repairs for the Nissan Pathfinder.
check fuses under dash panel and for short if wired for trailer
look under the drivers side dashboard you will find the combination flasher unit, it is square and has a wire connector going into the side Try this site out, it might help you out. http://autorepair.about.com/library/pictures/illustrations/bl703lib.htm
Follow the top hose from your radiator back to the engine. It connects to a long tube that is bolted at the opposite end to the top of the block; the thermostat is under the housing where those bolts are. Yes, you have to take off your intake manifold to get to it on this vehicle.
Under the motor