g35 sedan having lock/unlock wiring issue

Those are the actuator wires - they will work, but you need to 5 wire them. 

However, you should go in to the doors and hit the (-) lock/unlock wires at the power window switch.  That is also the only way to arm/disarm the system so it's pretty important.  Lastly, the best reason to go in to the doors, is so you can hook the window up/down feature up to the aftermarket alarm (just extend the (-) triggers on the lock/unlock wires).

You will need a double pulse to unlock the doors.

  NISSDL - Nissan & Infinty Doorlock Alarm Interface

	Power Unlock		BLUE/WHITE		(-)		AT SWITCH IN DRIVERS DOOR...NEEDS DOUBLE PULSE
	PowerLock		RED / WHITE		(-)		AT SWITCH IN DRIVERS DOOR

This is for 05...Since no year was posted...

It won't be a fuse, it will have to be a trace inside the BCM.  I believe in a different thread you said your car was a 1st gen G sedan, so your BCM is in the drivers kick (right where you were probing most likely).  Pop it out of the car and take it apart.  Inside you'll find about 5 relays, 3 will be roughly the same size - these 3 are the door lock relays (1 lock, 2 unlock).  Look for a burnt trace going from the NC contact of the relay to ground - it should be fairly obvious.

That's typically the issue - I don't think I've ever heard of anyone frying a BCM doing what you did.  If you did, it's about a $400 dealer part (much cheaper at a junk yard I would believe).  However, you have to admit there is a certain irony when someone tries to save $200 by installing something they've never installed and in the process damage a $400 part.    :)

I have a BCM out of an '05 coupe sitting in my garage - if it can help you in any way it is for sale!

In the G35 (and most other newer Nissans) the door lock actuators aren't tied to the door lock switches.  Instead, each door lock switch has its own circuit board and the boards send serial communications back to the BCM.  When you pulse the "unlock" wire in the door the power window module turns that pulse in to a serial signal to the BCM, the BCM reads it and then fires its internal relays to unlock the doors.  Its an overly complicated setup, but a pretty cool setup at the same time.  My guess would be that they did this to reduce wire and weight, as high current actuator wires are replaced with a single small wire.

To the OP, when I said to arm and disarm the alarm I was referring to the OEM alarm.  It will arm whenever locking the doors with the key and possibly whenever locking the doors with the power door lock switch when the car is off.