OK, Flusher, here goes.
First, the usual about making sure the pistol is unloaded and the magazine removed.
Then, remove the slide. Clamp the slide in a vise, upside down. With the safety up (off), use a small screwdriver to push the square part of the firing pin forward, so the back of the firing pin clears the safety. Using a small pair of Vise Grip pliers with padded jaws, grip the front end of the firing pin to hold it out.
Move the safety halfway between the ON and OFF positions, and use a small screwdriver to push it out to the left. With the tension off the combined safety and extractor spring, the extractor will drop out. Remove it, along with the two plungers and the spring.
With the safety out, you can release the firing pin and remove it and its spring to the rear.
Now you can see the loaded indicator and its spring. Using that famous small screwdriver, push it back until you can grab the rear with pliers, then pull it back and tip it up until the front clears the slide. Be careful; if it slips, it can fly away. Remove the indicator and its spring. The spring has an arm that forces it down; that arm must go to the front and toward the top of the slide (down from your viewpoint). With the spring and indicator together, push the indicator to the rear and again grab it with the pliers, tipping it down and into position.
Before you go any further, make sure the indicator will spring back down (up to you) if pushed toward the top of the slide. If it doesn't or if it seems hard to move, you goofed in the way the spring is in. Go back and read that part again and do it right.
With the indicator and spring in, reinstall the firing pin by inserting the pin and its spring, then again pushing it forward and gripping it with the Vise Grips. Install the safety from the middle position and push it all the way in. At this point, you will want to remove the slide from the vise. Then install the safety plunger, extractor plunger and spring, with the pointed plunger to the rear to bear on the safety. Now turn the extractor plunger so its notch is inward and the longer side holds the extractor. Push the plunger back with the extractor and push the extractor in. The extractor plunger will pop into place.
That's all. Wasn't that fun?
Jim