Finding the full and drain plug is not the hard part. The hard part is not ripping out whatever hair u got left while you drop your essential 10mm Allen key or the ratchet extension in the frame of your Nissan… I would advise that you get a penetration oil and hit the 2 bolts to that black thing over night and then when your ready to do the job take those 2 bolts out so u can have good access to the fill bolt, that’s the major problem if you can’t get that black box out the way, u have to finagle extension and a 10mm Allen key OR if you have a 2 foot Allen key that would be perfect. Good luck. I drained mine went through all that work and the fluid that came out looked as good as the new fluid i pumped in 🙄