How do you locate and replace the fan resistor on a 1997 Nissan Sentra?

I know you have to remove the dash to get to it. I'm looking for an answer on how to remove the dash because I have the same problem. The dash does not have to be removed, at least on my 2001 Sentra. You do have to remove the glove box (two latches inside of the box have to be pulled inward to release the glove box) then there is a cover that has to be removed (two Phillips head screws). These will be exposed when the glove box is removed. Pull the cover down slightly, reach in above the cover to release two white clips. Now comes the hard part. Laying on your back, looking up under the dash, next to the firewall and close to center of the car is a four wire cable that attaches to the resistor block. The block is held in place with two more Phillips head screws. One screw is visible, one is behind the connector. (Trust me, it's there.) The resistor block assembly will pull down out of its slot. Unclip the resistor block, take it to the Nissan dealer and say "Give me one of these." Mine cost $25. Attach the new block to the connector, slide it back in place and replace the two mounting screws. Slide the cover into the two retaining clips then replace the two screws. Put the glove box back into place the push the retaining latches into place. It takes only about two minutes to remove the block and the same to replace it. The new resistor block may look different but the important thing is the connector not the shape or color of the block. You can continue to operate the fan on high while the resistor block is out of its connector. It only controls fan speeds 1, 2, and 3.